I haven't watched Argo, Gone baby gone or The Town, so maybe i will change my mind about him.
But he is in the same generation of Leo DiCaprio, Matt Damon, Benicio Del Toro and compared to them he's a lightweight.
I didn't like DiCaprio either his first years, thought he was just another pretty boy, but in his case i have completely changed, he's one of the great actors of his generation. In We own the night and the Departed he´s fantastic.
Edit: for some reason i thought he was in We own the night, but of course that was Mark Wahlberg and Joaquin Phoenix.