I'm definantly getting both, but I'd rather go for Fable 2 first as it includes co-op. It's much easier finding a game to play co-op with in it's first month of release than say 6 months when the game is practically beaten and forgotten.
On the other hand, Fallout 3 is completely single player, with plenty of time to beat the game and get the full experience whenever you want, maybe even 2 years from now.
I'll still probably get both within several weeks.









