@Primotivo,
At first when they were shooting the tall guy from the right and he was talking I thought it was Will Ferrel and I was thinking, 'Okay - Will got himself into some good shape for this movie...' and then they did the close up from the left and I could see it wasn't him.
Just going by the voice though - it could be Will Ferrel's less sloppy and more handsome younger brother (or son - I don't know how old he is).