Charles Kinnane's 11 year-old brother dressed as an iPhone. And a next-gen iPhone at that, it appears.

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Oh Hellz yeahs. I love this Minecraft Creeper costume from Nick Abbott. It's creative, home-made, and totally cool. Plus it's a creeper, so, kind of scary.

Josh Brodfuehrer sent us this photo of himself and a pal as Deadmau5 and a skinny Tron Guy. (We just assume it's a skinny Jay Maynard. At this point Tron Guy is more famous than the original franchise.) And yes, the music of Deadmau5 is frightening!

Gisgamer is a Web server. Get it? Get it? It's a terrifying pun!

Brian Harris junior shares this Steve Jobs costume photo. Will it be the only Steve Jobs tribute? We can't imagine!

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Sockeyesteve sends us this iPhone 4S costume photo. (Dude, check your email).

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Rachel Skybetter is the T-Mobile pitch woman, Carley Foulkes. Points for the concept, but come on a Verizon phone? Real commitment would have been breaking your contract early and signing up with T-Mobile just for the sake of the sight gag.

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@EEynon says he's dressed up as his favorite web browser. So, wait, that's an Internet Explorer costume? Isn't Internet Explorer everyone's favorite? Oh, wait, never mind it's just the scariest.

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This team costume from Mallory Blair and @abrahamd is so deeply nerdy that it pops up at way past cool. What are they, you ask? Why, Max/MSP and Jitter, naturally.