The Les Grossman bit wasn't funny, especially not as funny as the original Tropic Thunder bit. It didn't seem to have any of the character or wit that the original bit had.
The end, however was. I didn't expect that, that was actually pretty great.
Blackberry, not part of time, blahblahblah, moving on
On Steve himself when he's not attempting (and failing) to channel Les Grossman, he's pretty funny otherwise. He's going to be fun to watch, definitely.
Not bad, but the Les Grossman bit isn't very funny if you've seen the original.