I just got my NES working (though I do think I need to get a new pin connector or whatever it's called). I've been on a huge old school kick lately and have been wanting to play some new old games. Anyways, what are your favorite NES games (or any pre-PS1/N64 stuff really)? I'm kind of looking for game suggestions, but I'm mostly just interested in what old school games people like.

NES games I own:
Mario 1, 2, 3
Teenage Mutant Ninja Turtles
World Cup
Beetlejuice
Zelda 1
Star Trek
Tetris
Metroid
Castelian