Vegas is already larger than life, causing a crick in the neck every time you want to take in the full wonders of the strip. And that's before you make it to Déjà Vu Erotic Ultralounge.
The free app mostly pimps MGM's hotels, however it also offers other interactive details on rival hotels, casinos and other "points of interest." Pointing your iPhone 3GS at a hotel or club on the strip, for example, allows you to make restaurant reservations or see what shows are playing when.
Pretty fun, and definitely lighter than carting about a guide book with you. [iTunes]