Dawn of War 40k was a very enjoyable game. Especially the uniform painter.

Game was lots of fun, got me hooked onto the 'Horus Heresy' series.

Company of Heroes.
Recently purchased it, can't stay away. Beautiful painted loading scenes, excellent garrison ability, WW2, explosions, fully destructible environ.
When I say 'fully destructible' I mean it (even if it may not be grammatically correct)

I'm on a map with hedgerows everywhere.
A couple 105 howitzer bombardments later the place looks like the moon.