Best line up for the next year? Ha!
Dammit, I'm still trying to figure out how to buy all of the games I want. Bio Shock, Assassin's Creed, Mario Super Strikers, Metroid 3, Halo 3, GTA IV, Guitar Hero III, Rock Band, Super Mario Galaxy, Super Smash Bros., Mass Effect, and maybe a redesigned PSP if money magically appears in my wallet. I might have forgotten a game or two in that list...
Once we get into 2008, it's hard to tell what will be released. None of the three companies spoke too much about their 2008 plans. There's Metal Gear Solid 4 and Mario Kart, but that's all I'm looking forward to and aware of.
I think Nintendo had the most surprising line up. People seemed so sure that we'd only get two out of the three big games (Metroid, Brawl, and Mario) this year, but instead we're getting all three. Tough decision, but they're my pick.