IGN has a list:
Nintendo
Classic NES Series: Super Mario Bros. (GBA)
Classic NES Series: Donkey Kong (GBA)
Classic NES Series: Excitebike (GBA)
Classic NES Series: The Legend of Zelda (GBA)
Classic NES Series: Ice Climber (GBA)
Classic NES Series: Pac-Man (GBA)
Classic NES Series: Xevious (GBA)
Classic NES Series: Bomberman (GBA)
Donkey Kong Country 2 (GBA)
Fire Emblem (Cube)
F-Zero 2: Legend of Falcon (GBA)
Geist (Cube)
Mario Party 6 (Cube) Mario Golf Advance Tour (GBA)
Mario Tennis (Cube)
Metroid Prime 2 (Cube)
Nintendo DS handheld system
Paper Mario 2 (Cube)
Pikmin 2 (Cube) Star Fox 2 (Cube)
Silicon Knights title (Cube)
The Legend of Zelda: Four Swords Adventures (Cube)
The Legend of Zelda: The Wind Waker 2 (Cube)
THQ
The Incredibles (Cube, GBA, PC, PS2, Xbox)
WWE Day of Reckoning (Cube)
Ubisoft
Splinter Cell: Pandora Tomorrow (Cube, PS2)
Natsume
Harvest Moon: A Wonderful Life 2 (Cube)
Namco
Tales of Symphonia (Cube)
Baten Kaitos (Cube)
EA
Harry Potter and the Prisoner of Askaban (Cube, PC, PS2, Xbox)
The Lord of the Rings Trilogy (Cube, PS2, Xbox)
Madden NFL 2005 (Cube, PC, PS2, Xbox)
NASCAR Thunder 2005 (Cube, PC, PS2, Xbox)
NBA Live 2005 (Cube, PC, PS2, Xbox)
NCAA 2005 (Cube. PS2, Xbox)
NHL 2005 (Cube, PC, PS2, Xbox)
Catwoman (Cube, PS2, Xbox)
Def Jam Vendetta 2 (Cube, PS2, Xbox)
Capcom
Resident Evil 4 (Cube)
Killer 7 (Cube)
Mega Man X Command Mission (Cube, PS2)
Blizzard
StarCraft: Ghost (Cube, PS2, Xbox)
Bandai
RibbitKing (Cube, PS2)
Digimon Rumble Arena 2 (Cube, Xbox)
Digimon World 4 (Cube, PS2, Xbox)
Activision
Spider-Man 2 (Cube, PC, PS2, Xbox)
The Movies (PC)????? I thought this one was for the Cube too...
THUG 2 (Cube, PS2, Xbox)
X-Men Legends (Cube, PS2, Xbox)
This is all confirmed.