Same, I've been hooked on Fallout 3, mostly, but I've pretty much finished it. Been playing Clear Sky multiplayer quite a bit, too. I'ma probably have to go back to playing CoD4, soon, I miss it.
So far, I've managed to get the gold AK, the gold M60 and the gold dragunov, 'bout half way towards the gold micro uzi.
It's harder when the rest of your team sucks. >_<