For me it would be in this order:

1. Super Smash Bros. Brawl
2. Silent Hill V (PC version of course) (2008 right?)
3. Mario Kart Wii
4. Half-Life 2 Episode Three (2008 right?)
5. Okami
6. Pro Evolution Soccer
7. No More Heroes

Sorry 360 and PS3, I don't really care about what you have :P I still have many 2007 games missing anyway :(

my wii games for 2008

smash bros brawl
Mario kart
no more heroes
disaster day of crisis
fatal frame 4
obscure 2

My 10 Wii games of 2008 at the moment (meaning I expect some big announcements in early 2008) 

Super Smash Bros. Brawl
Mario Kart
Final Fantasy: Crystal Chronicles
Project O / King's Story
No More Heroes
Wii Fit
Animal Crossing
Wii Love Golf
Disaster: Day of Crysis
Dragon Quest: Swords

In no specific order:

Ninja Gaiden II
Fable 2
Banjo Kazooie 3
Alan Wake
Halo Wars
Too Human

Possibly:
Huxley
Left 4 Dead

GTAIV

Infinite Undiscovery

Super Smash Bros. Brawl
Mario Kart

I'm really looking forward to Viking: Battle for Asgard. Q1 2008 Baby!! haha just kidding calm down.

I'll just say the usual suspects for PS3

Killzone 2
MGS4
GT5
et cetera, et cetera.

How could I forget Fatal Frame? Silly me!

Also I'm expecting Wii Love Golf, Project O and that RPG from the creators of Odin Sphere.

wii-
SSMB
Wii fit
mario kart

ps3-

-Mgs4
-white knight story
-little big planet
-gt5-

haze
-the agency?
-infamous
-If those bioshock rumors are true, though doubtful.
-lost planet

-eternal sonata.

 Most likely ace combat 6.

360
-lost odyssey
too human
banjo 3
fable 2
Maybe gears 2 but i doubt it

multi.
-last remnant
-gta4
-dmc4

sorry for the gaps in the ps3 section, when u accidently press enter then back space it thinks you want them on the same lines.