Also, Dawn of War was pretty amazing..
Personally though I didn't care too much for Act of War. Not enough planning, base construction, defense and all of that.. I am only on the second level, but that is my impression so far.. However i have become too used to big open fields in games like star craft so perhaps I shouldn't make an opinion for a little bit more playing.
Just in the middle of the Original Doom right now and gotta play through that first

So much fun, you just can't beat the original