List of pc games not on PS3?

I just upgraded my pc and was wondering if anyone has made some sort of compilation of pc/360 only games. I have a ps3 so anything that was on both the 360/ps3, i've likley played, Just wondering if there are some 360 console exclusives i might be able to play now for pc.  
 
I feel like ive seen a list like this made before but my google-foo is fail. 
 
thanks

anyspecific genres or timeframe? there's a lot of pc games that aren't on any console, but just off the top of my head some recent pc games that aren't on ps3
 
left 4 dead/left 4 dead 2
mass effect/mass effect 2
s.t.a.l.k.e.r. shadow of chernobyl/clear sky/call of pripyat

gears of war
mass effect (2)
left 4 dead (2)
and others.

Let me remember:
 
TF2 
Mass Effect 1 and 2 
Portal... just get the whole Orange Box 
Geometry Wars 1 
 
There's more I'm sure. I'll try to look at my Steam list tomorrow, need to go to sleep.

orange box is on ps3 yo

@onimonkii said:

"anyspecific genres or timeframe? there's a lot of pc games that aren't on any console, but just off the top of my head some recent pc games that aren't on ps3  left 4 dead/left 4 dead 2 mass effect/mass effect 2 s.t.a.l.k.e.r. shadow of chernobyl/clear sky/call of pripyat "

Should have been more specific. I'm really looking for 360 'exclusives' that were also pc releases.   
I wasnt' aware gears of war was a pc release also, I'll pick that up. Mass Effect is allready on my list :). I'm not expecting anyone to try to figure out which games I'd like, more just wondering if such a list exists anywhere. But thanks for the suggestions, gives me something to start out with.