Spacehulk, on the amiga 500!
EDITh..I meant spacecrusade..hehe

The one you play on tabletop.
...because it is the only game where the term "gamer" isn't all negative.

Ah yes, that was a good one!

I guess my favorite so far is Space Marine. Unfortunately we don't have much variety! (yet)

Space Marine, followed not-so-closely by the DoW series.

Probably Dawn of War 1 - the entire series.

However, Space Marine was the first time I got to see a persons eye view of what the 40k Universe would look like. The scale and scope of things such as Titans and Manufactorums was captured REALLY well. There were times I just walked around exploring levels because I thought it looked so amazing.

I also have to admit I LOVED playing through Kill Team for the sheer craziness of it

I love them all - however, I'd say the top 3 are:

DoW II: Retribution
DoW I: Soulstorm/Dark Crusade
Space Marine

I have logged multiple playthroughs in all three/four of these titles and they are just fantastic!

Space Marine was awesome, despite my hate for the SMurfs. However, I've logged the most hours on Retribution - playing each and every campaign multiple times and playing a LOT of last stand - need to actually play multiplayer online sometime!

hmmm i think my favourite was DoW 1 and its expansions followed by space marine, fire warrior, DoW 2 and finally chaos gate but i never really understood that game back when i played it so never really got far lol

Dark Crusade and Dawn of War II, Chaos Rising and Retribution are damn close to my heart. And of course I liked Space Marine too.
Still this is a hard question since the original DoW got me into 40k.

Thank you!! I loved Kill Team as well. I have always wished they would have expanded on it. Would have been awesome if they turned it into a 40K version of Diablo for endless gear grinding. Something like that would be the perfect hold over for EC.

The most played for me is Space Marine because our community on PS3 is epic.

Does anyone know what ever happened to the talks about DoW3. I read an article about a year ago that it was on the drawing board and it was going to be based on custom armies and a sand box galaxy.

Definitly Dark Crusade. Orks played so well in that version of DOW I had so much fun with it! Space Marine was a close second; the coop was really fun, especially the chaos dlc.