Marvel Nemesis: worst handheld fighting game I ever played.
Peter Jackson's King Kong: Terrible graphics, worthless AI, lots of glitches, slowdowns, no replay value.
WWE Smackdown vs Raw 2009: worthless controls make it unplayable.

Happy Feet: Stupid, boring gameplay except for the sliding parts. Those were actually some what fun.

Cars- it is so bad that i gave it away for 2 bucks