Jon Stewart and Stephen Colbert meet again. This time, rather than as hosts of companion shows fictionally on opposite sides of the political spectrum, they meet as Late Show host and surprise guest.

Stewart is still on the march to get the Zadroga Act, the act that ensures needed medical care for 9/11 first responders, and is calling up big favors left and right. Already he has gone on The Daily Show and, just last night, he not only went on The Late Show with Stephen Colbert, but he did so with his stunning Donald Trump impression.

There’s no way that Congress isn’t watching this like everyone else is, right?