Keep in mind, though two of these list for $400, most cap at $250, and they're all toys. They don't have a heck of a lot of AI, though they do have an impressive array of user-triggered functionality and some goofy "spontaneous" behavior. You ain't getting C-3PO no matter where you turn, not even R2-D2, but there's something cool about each of these:

Mr. Personality - $245
This is one weird bot. Turn it on and it will act like one of the many "personalities" you have downloaded to it, telling jokes, reading fortunes and interacting with you along the way.
Pros: 3-legged, multi-directional wheels move in all directions easily; multiple personalities technically mean relief from boredom; depending on the personality, it'll call you "master"
Cons: The default personality is very annoying; not enough functions to stay entertaining; obstacle sensors are too sensitive
Worth the money? Doubtful. Depending on the power of the development community some fun personalities may emerge, but they are severely limited by the options on the remote.

Rovio - $240
Maybe the most technical bot of the bunch, the Rovio is a webcam-on-wheels controlled via an internet interface. With some smart maneuvering, you can snoop on your daughter's date in the living room from the privacy of your bedroom. Or, if you have your own domain server, you can control the Rovio from anywhere in the world. It has major limitations, like an awful camera and outside of Internet Explorer you can't hear any sound, but its API allows customization so there's true potential that has yet to be reached.
Pros: Good looking, highly interactive UI; like Roomba, can return to its base to charge itself when batteries run low
Cons: Seriously shitty webcam; setting it up on a Mac is torture; if you bought this thinking you can easily control it from anywhere in the world for free you're SOL
Worth the money? Not yet. The Rovio is a great concept, but you'll be much better off waiting for version 2.0... or maybe 3.0.

Femisapien - $50
She's the female companion to Robosapien, and she'll blow you kisses, dance to music or speak in her very own gibberish language with you. She doesn't do anything very fancy, but she's the only girl here, so she looks better doing it than most of these other bots.
Pros: Fairly interactive; relatively inexpensive; giant robot boobs
Cons: Command system very complicated; routines aren't all that exciting
Worth the money? Only if your name is Zoltan.

iDance WALL-E - $53
The cheapest WALL-E of the crop, and a less expensive alternative to the Rolly, iDance WALL-E dancesif you can call it thatto the beat of your MP3 player, or his own built in sound bank. A one-trick pony, but I'll be damned if it isn't an adorable trick.
Pros: Look at that little bothow could you not love it? His dancing is fun and silly, and he couldn't be any easier to use
Cons: The speaker sucks; WALL-E's moves don't match the music closely like Rolly's do
Worth the money? When we first saw the iDance WALL-E, he was only supposed to cost $25 bucks. But now, at twice the price, it's definitely one bot we can live without.

Ultimate WALL-E - $400
The name says it all: The biggest WALL-E of the litter is ultimate in every way. It will follow you around, dance to your music, or perform a pre-programmed series of movements and noises. Best of all, it uses a really interesting controller that can move WALL-E using a touchpad.
Pros: Big enough to seem realistic; a ton of features so it won't bore quickly
Cons: Expensive; controller has too many buttons that don't do very much; did I mention "expensive"?
Worth the money? Who has that kind of money to spend on a robot? Especially one that isn't programmable, upgradable or all that intelligent. It should've stayed at its original $190 price.

U-Command WALL-E - $130
U-Command WALL-E is the Baby Bear of the WALL-E bunch, just right in almost every way. Its controls are comparable to the Ultimate WALL-E, it can move, dance and make noises on your command, all for a much more attractive price.
Pros: Essentially a "lite" version of the Ultimate WALL-E for less than half the price, versatile controls allow for repeated play without getting too stale
Cons: The only WALL-E without a line-in speaker for MP3s; not as technically impressive as other over-$100 contenders
Worth the money? Totally. Even at $130, it's one of the cheaper robots on the list, and the most fun right out of the box.

Sony Rolly - $400
At first glance, the Rolly doesn't fit the traditional robot mold. The egg-shaped MP3 speaker looks like it's just another smooth white gadget with an "i" in front of its name. But when you see it in action, it's one of the most exciting little toys around, dancing wildly and putting on a light show to the rhythm of the songs coming from its body.
Pros: Great speaker; customizes dance/light shows to your own songs; amusing even after repeated viewings
Cons: Can't customize songs on a Mac (but you can on a Vaio!); can't jump to a specific track on the device
Worth the money? Surprisingly, it might well be. I can't put my finger on it exactly, but I get a huge kick out of the Rolly. The fluidity and snazziness of the movement and lights explains the steep cost.

D-Rex - $150
The scariest bot of the lot, D-Rex growls, attacks and lets out the sounds of bodily functions from every orifice. Rubbery, lizard-like skin and huge, moving yellow eyes add to the effect.
Pros: Creepy; fun to play with (for a while); the coolest looking of all the robots
Cons: Doesn't do too enough; may scare little kids (or is that a "pro"?)
Worth the money? Tough call. D-Rex is probably the biggest robot here and isn't that expensive for being so big. But since it only performs a few functions, don't expect anything close to a Pleo.

Elmo Live - $60
What's left to say about the newest version of every kid's favorite fuzzy friend? It raps, dances and tells stories and jokes, all in the body of the most popular Muppet of a generation.
Pros: Buy this for your kids and they will love you forever.
Cons: Don't buy this for your kids and they will hate you forever; also, the song "Elmo's Gotta Get On Up" has been stuck in my head for damn near six months
Worth the money? Do you have a choice? At $60 it's a steal compared to most of these other bots... but good luck finding it.

And now...
The Winner: U-Command WALL-E. One of the few bots here that is fun to play with more than once, this WALL-E is cute, interactive and kids can enjoy him without driving parents crazy by playing the same thing over and over*cough*Elmo Live*cough*.

Runner-Up: Rolly. I can't stop looking at this little dude. His syncopated dancing demands attention from anyone who sees him, and he is the bot that performs his most essential functionplaying music through a speakerthe best.

Honorable Mention: iDance WALL-E and Ultimate WALL-E. I like you both a lot, but why did you get me all excited with your decent prices, and then double them when I wasn't looking? Not cool guys.

The Loser: Rovio. No offense here Rovio, we really like the though of a remote controlled, customizable webcam and we think you will get it right one day, but right now you cost too much and the most important feature you haveyour webcamis absolutely terrible.

As you can see, like a few other WowWee vids the production value is prit-tay high. Yes, Femisapien can wield a whip to discipline Robosapien. Yes, she can shake her ass. Something tells me this is only the beginning of BDSM-tinged Femisapien vids. Guess that's what you get when you bring to market a programmable fembot with a molded plastic rear. Femisapien should be shipping soon to the US for $99. [Robots Rule]

Yep, still creepy after all these years. [Boing Boing Gadgets]

While Femisapien's no Uma Thurman with those blades, the range of motion and the accuracy of the robot's pose-programming does mean this is going to be one cool toy to play with.

Interestingly Geek Alerts is saying that Femisapien will be available in the US soon for $99, which is at odds with the $175 we mentioned earlier. Guess you'll have to wait to find out how much you'll pay to do robotic reconstructions of scenes from Zorro. [Geek Alerts]

From first viewed to last viewed:

" Mr. Clock Radio by Geewiz Entertainment ($99.99), is primarily an alarm clock radio. However, it does have a line-in jack, making it usable as a personal speaker set. It also has some three-hundred different wake-up message (half are aggressive, half are charming), and a fun/pointless "fortune telling" mode. The price is a little steep for the basic tech it implements, (flashing lights, portable speakers and pre-recorded messages), but we can't help loving the guy for his fantastic witticisms. [Geewiz Entertainment]

" Comprehensive Robot Kit by Bioloid ($869.00), one of the most complete and versatile robotics kits we saw on display at CES '08. The Comprehensive Robot Kit is really a a super-glorified Lego kit. It comes with various robotic bits'n'bobs, including IrDA receivers for dual robot communication, microphones for sound detection, luminosity detectors, piezo-electric speakers, essential battery packs and a full software suite for programmable characteristics in your robot's behavior, all via your PC. At this price, the kit is strictly an educational tool or for serious enthusiasts. [Bioloid Comprehensive Kit]

" Wrex the Dawg by WowWee ($TBA), has three emotional modes (happy, sad and angry), 14-motors for movement and a remote control for general locomotion. Expected to ship this Spring; if Wrex's quirky styling does not have reaching for your wallet, perhaps his mechanized wagging tail will? [WowWee]

" Tribot by WowWee ($99.99), is the robot that will replace the much loved Robosapien. The Tribot comes pre-loaded with a series of games that rely on the user to position the bot in various different orientations, it has three wheels that allow it to have a wide range of movements, a motion sensing controller that allows for Wii-esque navigation and it will hit the shops this summer. [WowWee]

" iRobiQ by Yujin Robot has been doing the rounds since CES 2007. It is a home information service that is able to display the news, weather, cooking recipes, photos, videos and sing some karaoke if you get bored. All this information goodness is displayed on a 7-inch LCD screen, but the iRobiQ also accepts voice commands for various jobs, like sending images to a cellphone, ordering a room to be cleaned by pairing with a Roomba type device and even read books that are stored on its central server. The iRobiQ, at present, has no US distributor, so do not expect it to ship anytime soon. [Yujin Robot; Korean link, via Tech Digest]

" E1 by Roboware ($1,500), recognizes set voice commands via a Bluetooth headset, connects to your network to transmit pictures captured via the on board camera, which it can also display on its tiny LCD screen and boasts bi-pedal motion, generated by a ton of different joints. At present, it is not ready for shipping, as the engineers are working out the bugs in the system. The final model will come with a full software suite, as well as an online developers community that will be launched along side the bot. Roboware hopes to ship the E1 by March, and envisions a truly malleable robot that can be completely defined by its users. [Company website is not live at present]

" Zeno by David Hanson (concept stage); we have covered Zeno an awful lot here at Giz, but the creepy bot was displaying his moves at CES '08, still in prototype stages. Zeno did not look so horrific in the real "frubber," but he still made us a little unsettled. Zeno will be able to talk, recognize faces and detect specific sounds, as well as be user upgradeable via an online community, with which Zeno can remain wirelessly connected thanks to the inbuilt support for Wi-Fi connectivity. [Hanson Robotics]

" FemiSapien by WowWee ($TBA), the FemiSapien is coined as Robosapien's girlfriend, and when the two interact, hilarious girlfriend/boyfriend rifts take place. The Femisapien is able to control Robosapien, but not visa versa. The female bot will be able to dance, move, sing and carry out a range of movement like her out-dated boyfriend. We are not sure the robot god approves of them living in sin, but we did not see them romp. However, if Robosapien carries on acting like this (VERY NSFW), we are sure robot god will be most displeased. Expect the FemiSapien to ship this summer. [Robots Rule]

That's the best of the robots we uncovered at CES '08. It looks like it is going to be a great year for fans of this genere of toys, but Sony, if you are reading, we wouldn't mind Aibo joining in the festivities at some point. Until then folks, there should be more than enough here to tide you over.

So can WowWee justify their gadget? (Or, maybe more importantly, do female robots really need any justification at all?)