Combine Battlfield 2, Crysis, UT3 Engine, and something completely original, you get Homefront.
Something about this game is so very different from other games I've played. The multiplayer is familiar in usability, yet completely original. It has it's own gameplay style.
I think what makes it so amazing in gameplay is the maps. They are wide open like Crysis. Also, there are planes and aerial vehicles like Battlefield 2. But it is built with map content that far exceeds Crysis or Battlefeld Company 2 maps. After playing this game just a little bit, I have come to realize the fricken maps in Homefront make other games look generic. Homefront maps are genuine, original, detailed, creative, elaborate, and simulate the "home front".
And yea, there is something disturbing about the Single Player, but that exact disturbing characteristic is also very stimulating. It puts you in the game. The storyline is emotional and awakening.