Using my amazing predictive skillz, I'll take a stab at some of the Wii games coming out later this year:
Action/Action Adventure:
Batman: The Brave and the Bold (September) 650k
Epic Mickey (TBA) 2.3 Million
Flingsmash (TBA) 450k
Lego Star Wars III: The Clone Wars (TBA) 1.4 Million
The Lord of the Rings: Aragorn's Quest (September) 550k
Metroid: Other M (August) 1.3 Million
Spider Man: Shattered Dimensions (September) 550k
Star Wars: The Force Unleashed 2 (October) 1.0 MIllion
Adventure:
PokePark Wii: Pikachu's Adventure (TBA) 1.4 Million
Party:
Rayman Raving Rabbids Travel in Time (November) 1.2 Million
Wii Party (TBA) 10-14 Million
Platform:
de Blob: The Underground (TBA) 750k
Donkey Kong Country Returns (TBA) 6-8 Million
Flip's Twisted World (September) 400k
Kirby's Epic Yarn (TBA) 1.5-2.5 Million
Sonic Colors (TBA) 1.4 Million
Sonic the Hedgehog 4: Episode 1 (TBA) 100 Million*
Puzzle:
Ivy the Kiwi? (August) 300k
Rhythm/Music:
DJ Hero 2 (TBA) 450k
Guitar Hero: Warriors of Rock (September) 1.1 Million
Just Dance 2 (October) 1.6-2 Million
Rock Band 3 (October) 850k
Rock the Dead (October) 400k
Shooter/Flight:
Call of Duty: Black Ops (November) 1.3 Million
Conduit 2 (TBA) 600k
GoldenEye 007 (TBA) 800k - 1.2 Million
Sports/Racing:
Madden NFL 11 (August) 800k
NBA Jam (October) 600k-1.2 Million
NHL 2k11 (August) 420k
It'll be fun to see how wrong I am in the upcoming months. 
*If it was a retail release. Oh Sega...
