He was in the front center of the stage, walking toward stage right, when he was shouting Impeach, Impeach...
Bottom Line: Our recollections on the impeach chant disagree, and we need someone else to testify.
Do you recall his quip about Dick Cheney (during the PSA)?
I will agree to differing perceptions. I did not take away with me the impression that I heard him call to impeach Bush. The impression I came away with was to make sure our representatives are telling us the whole story. And I will agree that is directed at the current administration, as well as those critical of it.
I agree that he was poking fun at Cheney.