Peter Grosz is best known as one of the two guys in the Sonic commercials, but he has also written for The Colbert Report and Late Night with Seth Meyers. He has performed at The Second City etc., the UCB, Boom Chicago, and iO Chicago. Jimmy talks to him about why he still loves improvising, getting hired to write for Colbert and why he likes to play the unlikable Sidney Purcell in HBO's VEEP.
