How about Mahjong and Geon?
I don't think I've seen these mentioned yet, and I forgot to mention it on my post earlier.
Mahjong is just a real time killer, and they have some simple "tales" to go with the puzzles. It is just a matching mash em up.
Geon reminds me of PacMan. A great combative take on it.
skate 2, 60 bucks
Batman Arkham Asylum, 60 bucks
Bioshock , 60 bucks
burnout paradise, 60 bucks
call of duty modern warfare 2, 60 bucks
Unchared 2, 60 bucks
assassins creed 2, 60 bucks,
basically all the RALLY good games are 60 and above