July 20, 2011 at 8:27 AM ET
He broke into David Letterman's Ed Sullivan Theater by slamming a metal trash can into the windows.
It was all in good humor as part of a "Late Night" bit. But nevertheless, it looked like Matt was having a great time.
This morning, Al remarked on TODAY that all Matt had to do was open the door. "That's not as much fun," Matt joked.
Watch the smashing video from "Late Night" below: