Rome:TW is fantastic. Love the huge battles. At 1600x1200 res they are a thing of beauty. great stuff.

But heresy rules, and I'm voting for IL2-Pacific Fighters. Being a flightsim-head, I cannot resist the carrier action, kamikaze attacks, naval battles, dogfights, ground pounding, and excellent graphics. And the game frequently gets update patches with new planes and graphical treats. Just love it!