360: Gears 2 (probably on Nr.3), Fable 2 and maybe Fallout 3
(I have no idea about Banjo, but I don't think it has a chance to sell more than 600,000 copies the first week)
PS3: LBP, Resistance 2 and most likely PES 2009 and Motorstorm:Pacific Rift
CoD World at War is also a possibillity for both consoles
Wii: To be honest. I don't care