I'm going to nominate every (new) game I think has a chance at selling over 100,000 in the Americas on Wii, PS3, and 360 from August - December 2007. This is based on IGN release dates, so just correct me if I'm wrong on some dates.
August:
Likely
Wii - Metroid Prime 3, Madden NFL 2008, Boogie, Tiger Woods 08,
360 - Madden NFL 2008, Blue Dragon, Bioshock
PS3 - Madden NFL 2008, GRAW II, Stuntman
Possible: Warhawk, Space Station Tycoon (Wii), Tiger Woods 08' (PS3)
September:
Likely
PS3 - Heavenly Sword, Lair, Skate
Wii - MySims, DDR, Dragon Blade
360 - Halo 3, PGR 4, NHL 2k8
Possible: Eternal Sontata, Fatal Inertia, Elder Scrolls IV (Game of the year edition), Dewey's Adventure
October:
Likely:
Xbox 360: Final Fantasy XI, NBA 2k8, NBA Live 08, Tony Hawk, Ace Combat, Viva Pinata, Guitar Hero III, Virtual Fighter 5, The Simpsons Movie (game)
Wii: Guitar Hero III, Zack & Wiki, DK Barrel Blast, Tony Hawk, Fifa, EA Playground, Need for Speed, Battallion Wars 2, The Simpsons Movie (game)
PS3: NBA 08, NBA 2k8, NBA Live 08, Ratchet & Clank, Guitar Hero III, Singstar, Need for Speed, The Simpsons Movie (game)
Possible: Forever Blue, Folklore, Fifa Soccer (PS3)
November:
Likely:
PS3: Assassin's Creed, Call of Duty 4, Haze, Brothers in Arms, Rockband, Uncharted, Unreal Tournament 3, Time Crisis 4
Xbox 360: Assassin's Creed, Call of Duty 4, Brothers in Arms, Rockband, Army of Two, Mass Effect, Phantasy Star Universe
Wii: Soul Calibur Legends, Nights, Super Mario Galaxy, Fire Emblem, Mario & Sonic at the Olympic Games, Medal of Honor Heroes 2, Rayman Raving Rabbits 2, Trauma Center 2, Resident Evil: UC
Possible: Geometry Wars ($30), My Word Coach, Crusin'
December:
Likely
Wii - Super Smash Brothers Brawl
Of the above games, here are my guesses at the top 10 games (in no order) - by sales - (Aug-Dec releases only) for each console
Wii - Galaxy, Brawl, Guitar Hero III, Mario & Sonic, Metroid Prime 3, DDR, Soul Calibur Legends, The Simpsons, Medal of Honor Heroes 2, Zack & Wiki
PS3 - Haze, Drake, Ratchet & Clank, Guitar Hero III, The Simpsons, Rockband, Madden, Unreal Tournament 3, Assassin's Creed, Call of Duty 4
Xbox 360 - Halo 3, Assassin's Creed, Rockband, Guitar Hero III, Madden, Call of Duty 4, Mass Effect, Bioshock, Brothers in Arms, NBA 2k8
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu