NES
Contra (Contra fanboy here)
Battletoads (You are not a gamer if you haven't played this)
Metal Gear
Metal Gear 2 (Metal Gear fanboy here)
Adventure Island 2 (This game is so much fun)
Bionic Commando (Pure awesome)
Afterburner (Half my childhood was playing this with an NES joystick attachment)
Godzilla 2 (Godzilla fanboy =x, awesome game still)
Baseball Stars (fun)
SNES:
TMNT Turtles in Time (I love this game)
Super Mario RPG (I never got a chance to play it, VC would give me that chance)
Clayfighter (it could never happen though, they did so many tricks with the sound that emulation ruins it)
Cool Spot (underrated)
Super Punch Out! (why not)
Pitfall: The Mayan Adventure (Love Pitfall Harry in this game)
Genesis:
NBA Jam (Love this game)
Rambo III (I have something for old 16 bit shooters)
Primal Rage (This was my MKII, I owned everyone in the arcades)
NHL 94 (I love hockey games)
Earthworm Jim 2 (fun)
N64:
Pokemon Snap (fun)
Super Smash Bros (Didn't play much, would like to)
Blast Corps (Don't remember much other than fun)
Cruisin' USA (My sister and I abused the hell out of this game)
The other systems I never really played so I can't say anything.