Yes. Just, yes.
Buy this game. Why? Because it's an epic shooter for the Playstation 3.
The game has awesome online modes, a terrific campaign, and an absolutely freaking kick ass nature. The guns, the graphics, the gore, the story, the insane online play, the characters, the environment, EVERYTHING. It's an excellent AAA title for the PS3.
If you like shooters, buy it. Just buy it.