There are so many cool single player games coming up in the next year...
Civ IV: Beyond the Sword,
Assassin's Creed,
Spore,
Fallout 3...
Just to name a few...
(Not to mention I still haven't play
Half-Life 2:
Episode 1 and
Episode 2 is coming out.)
I think I might drop off the face of the wow earth again (after I get my epic flying mount) and spend some quality single player time with my computer.
PS this post took ~10 min to write because of all of the links i made in it... use them.