on mine i have:
Emus: snes9x, info nes, gb emulator, C64, & gamegear
Roms: mario all- stars, metriod, super metroid, mario RPG just to name a few well known ones
Home brew: tetris BG, some nes qualityracing game, elf logic,
+ a few more
also wolfenstine 3D, wid-ups & an a$$ load more roms...