Left 4 Dead would be a good choice if you want a multiplayer zombie game. To be honest I thought this game was just OK (I only played the demo), but I'm sure many would disagree with me.
If you want a classic, single-player zombie game with a more contemporary feel get the Resident Evil remake for the GameCube (it will also play on Wii). The game is scary as hell; I've gotten several fun and horrifying hours from it. In my opinion the story is unique and the graphics, which easily surpass those of many Wii titles, are pretty for a 2001 GameCube title. Although many gamers complain about the controls, I feel that the game is solid enough to overlook them; you more or less get used to them as you play. And by this point I'm sure you could find it in the USED bin at any GameStop or GameCrazy for around $10 - $15, which is totally worth it. This game is a survival-horror/adventure game, though, so if you're interested in unremitting action and tons of fast zombies I wouldn't go with this one... get Left 4 Dead instead. You'll often find yourself conserving ammo, probing for items, and solving puzzles, but it's a rewarding experience in the end.
Resident Evil 4 is another great choice. Classic RE but with much more action and a different combat style that you may like if you aren't too fond of the fixed camera perspective of the original.
If you want something for the 360 I would get Dead Space. It's one of the scariest games I've ever played. The combat system is akin to that of Resident Evil 4, only much scarier. The monsters aren't exactly zombies but they're close.
If you want a classic, single-player zombie game with a more contemporary feel get the Resident Evil remake for the GameCube (it will also play on Wii). The game is scary as hell; I've gotten several fun and horrifying hours from it. In my opinion the story is unique and the graphics, which easily surpass those of many Wii titles, are pretty for a 2001 GameCube title. Although many gamers complain about the controls, I feel that the game is solid enough to overlook them; you more or less get used to them as you play. And by this point I'm sure you could find it in the USED bin at any GameStop or GameCrazy for around $10 - $15, which is totally worth it. This game is a survival-horror/adventure game, though, so if you're interested in unremitting action and tons of fast zombies I wouldn't go with this one... get Left 4 Dead instead. You'll often find yourself conserving ammo, probing for items, and solving puzzles, but it's a rewarding experience in the end.
Resident Evil 4 is another great choice. Classic RE but with much more action and a different combat style that you may like if you aren't too fond of the fixed camera perspective of the original.
If you want something for the 360 I would get Dead Space. It's one of the scariest games I've ever played. The combat system is akin to that of Resident Evil 4, only much scarier. The monsters aren't exactly zombies but they're close.