The list will most definitely increase as I think up more.
Do discuss, and list what you'd like to see released.
Arcade (YES, Nintendo, start releasing arcade games!):
Splatterhouse (far superior to the TurboGrafx port, but also much harder)
Genesis:
Castlevania: Bloodlines
Contra: Hard Corps
Splatterhouse 2
N64:
Banjo-Kazooie
Conker's Bad Fur Day
Diddy Kong Racing
DOOM 64
Excitebike 64
The Legend of Zelda: Majora's Mask
Mystical Ninja Starring Goemon
Turok: Dinosaur Hunter
NES:
Castlevania III: Dracula's Curse
Gargoyle's Quest II
SNES:
Blackthorne
Castlevania: Dracula X
Demon's Crest
Front Mission: Gun Hazard (Import)
The Lost Vikings
Rock n' Roll Racing
Star Fox
Star Fox 2 (I heard it was pretty much finished, so why not?)
Super Mario Kart
Super Mario World 2: Yoshi's Island
Teenage Mutant Ninja Turtles IV: Turtles in Time (why this isn't under the "Arcade" section is because I like the SNES version more)
Wild Guns
TurboGrafx:
Castlevania: Rondo of Blood
And also, I wanna start seeing Game Boy/Color games for download. Preferably on the DS, if it's possible, somehow. Either way, I want it.