I don't own that many, but I wish I didn't pay 40 for Kid Icarus: Uprising. It's a decent game, but I only got about 10 hours out of it. I hated the weapon fusion system and the online seems broken for new players.
I did really like the art style, voice acting and game play (for the most part), but I'm terrible at score attack games. I pretty much bought it blindly based on the insane amounts of praise it seems to get here.
All in all, I still like it, but it's extremely over rated. I only paid 20 dollars for RE: Revelations... I feel like that should have been 40 and KI:U should have been 20 XD
Sticker Star was also very underwhelming...
White FC [Panda]: 3783 - 6584 - 4908 White 2 FC [Liz]: 2666 - 9974 - 6792
Street Fighter IV 3D, Cave Story 3D (already owned the WiiWare version), Mighty Switch Force, and Freakyforms. All of the above I bought because I didn't have much else to play at the time (except CS3D, I was just a big fan and wanted to support it), and I have barely put any time into these games compared to others.
Nintendogs, to be fair it was a free game with my XL purchase and selling it back would've only gave me 3$... dog AI is bad, you can only get 4 pets at a time when there's like 50 different dogs and cats, and honestly what can you do? throw a ball or go for a walk or give them a bath...