Only a few for now, will update.
NOTE: Most of these games will require the original PC files, google will help you find some of these though some are freeware now.
Bubble Dizzy (bubble jumper?)
http://gbatemp.net/index.php?showtopic=89595
Commander Keen (PC platformer):
Commander K. Wii > http://gbatemp.net/?act=ST&f=116&t=115515
Doom (PC FPS):
WiiDoom > http://gbatemp.net/index.php?showtopic=116326
Flashback (Platform action/puzzle):
REminiscence Wii > http://gbatemp.net/index.php?showtopic=116135
Paradroid (c64 shooter):
Paradroid Wii > http://gbatemp.net/index.php?showtopic=120830
Quake (PC FPS):
Quake Wii GX > http://gbatemp.net/index.php?showtopic=90587
Rick Dangerous (8-bit/16-bit platformer):
Rick Dangerous Wii > http://gbatemp.net/index.php?showtopic=112785
Tyrian (PC Shooter):
OpenTyrian Wii > http://wii-news.dcemu.co.uk/opentyrianwii-...08--127535.html
I'll need help as there are maybe some I've missed but I'm lacking time to find all today. So if you know of more homebrew ports or if the above have been updated since then feel free to tell.
NOTE: Most of these games will require the original PC files, google will help you find some of these though some are freeware now.
Bubble Dizzy (bubble jumper?)
http://gbatemp.net/index.php?showtopic=89595
Commander Keen (PC platformer):
Commander K. Wii > http://gbatemp.net/?act=ST&f=116&t=115515
Doom (PC FPS):
WiiDoom > http://gbatemp.net/index.php?showtopic=116326
Flashback (Platform action/puzzle):
REminiscence Wii > http://gbatemp.net/index.php?showtopic=116135
Paradroid (c64 shooter):
Paradroid Wii > http://gbatemp.net/index.php?showtopic=120830
Quake (PC FPS):
Quake Wii GX > http://gbatemp.net/index.php?showtopic=90587
Rick Dangerous (8-bit/16-bit platformer):
Rick Dangerous Wii > http://gbatemp.net/index.php?showtopic=112785
Tyrian (PC Shooter):
OpenTyrian Wii > http://wii-news.dcemu.co.uk/opentyrianwii-...08--127535.html
I'll need help as there are maybe some I've missed but I'm lacking time to find all today. So if you know of more homebrew ports or if the above have been updated since then feel free to tell.