I keep coming back to AH and disregarding the stuff I've bought. In fact, I rarely even look at new games anymore.
I've got IL2, and as pretty as it is, I grow bored with it pretty early.
I tend to hit two or three day stretches where something grabs my attention... Shogun: Total War, Unreal Tournament, Roller Coaster Tycoon, Sim City... or MS Flight Sim.
Lately, if I'm not on AH, I've been playing a lot of online poker.