Productivity apps make up the bulk of the 10 iPad apps most popular during the tablet's inaugural year
Angry Birds HD
Here's a popular game that lets you control an angry red bird that's trying to get its eggs back from a thieving gang of green pigs. And yes, while this sounds like a metaphor for communism, Angry Birds HD is also an addictive and popular game that lets you launch birds from a giant slingshot and fire them kamikaze-style into the pigs' bases. (There's also a $0.99 iPhone version.) Wait, why do birds need a slingshot to fly? Oh well, the game is fun regardless. Get from iTunes.