Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I don't like tower defense games. But I like PvZ. It was awesome until I finished it. Now it really doesn't have much of a replay value. I just keep gaining gold with nothing to do with it.

Same with Peggle. Once I completed it, there wasn't much left to do other than perfect each stage.

Both are great games worth getting though. I would recommend them both to anyone.
 
Can't believe I spent a dollar on Battery Doctor. Useless app if you ask me.
 
Monkey Ball - unrefined controls
Enigmo - frustrated
Nanosaur - won't run smoothly on my iPhone (original) and sometimes crashes
 
If you bought a real stinker (I mean the really BAD apps that don't work as advertised or crash all the time, not a game you got bored of after 10 levels ;)) you can complain about it and get a refund.

Find the app in the app store (on the phone/ipad/ipod or in itunes), hit 'report a problem'.
 
Pocket God
Enigmo
Nanosaurus
Pocket Piano (so many free ones now)
Crash Bandicoot Nitro Kart 3D (when it was $10)
Zombieville
Battlefield bad company 2 (horrible controls)

But I'm also happy for the games I got for free/cheap that were temporarily on sale :)
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.