Wii:
1. Super Smash Bros. Brawl
2. Mario Kart Wii
3. Wii Fit (US release)
4. No More Heroes
5. Tales of Symphonia: Knight of Ratatosk
Possible unannounced Wii games that could be big:
1. F-Zero WX
2. Pikmin 3
3. Animal Crossing Wii
4. New Legend of Zelda
Wii hopefully will have more games announced, especially 3rd party ones. Their library really needs to grow into more genres, especially RPGs and Shooters.
360
1. GTA 4
2. Gears of War 2
3. Fable 2
4. Halo Wars
5. Too Human
In my opinion, 360 list isnt that enticing, it seems they played their hand in 2007. Plus, they need more variety as well, shooters can't be what you solely rely on.
PS3
1. Gran Turismo 5 (Prologue and real game)
2. Final Fantasy XIII
3. Tekken 6
4. Metal Gear Solid 4
5. GTA 4
PS3's lineup has potential and will allow it to close some of the gap between it and the 360. But I think that their "Halo-Killer" Killzone 2 will not live up to the hype. The series so far is really pretty average, and they need to do something spectacular to sell it. I personally don't think it will get better, but hopefully they will surprise me. Another thing to worry about is many of the heavy hitters, like Final Fantasy, may not come out this year. If this is the case, then the PS3 may not be able to outsell the 360 enough this year to put the PS3 in reach of passing the 360 sometime soon.