Any 3D GTA - they didn't make the transition well IMO, everyone else seems to rave about the newer ones *yawn*
Any Halo - IMO it's generic, and it really has nothing that I look for in a shooter
Su Do Ku - Everyone loves them, whether a computerised version or not. Just because there are numbers in front of you, it doesn't mean you are doing maths - Su Do Ku are glorified find-a-word puzzles