Every Friday night, iO West hosts a 90-minute evening of the best in long-form improvisation, with celebrity guests and a troupe of funnymen/women making comedy hay out of audience suggestions.
From the iO West website:
The Armando Show is a 90-minute long improvised comedy show inspired by an audience suggestion, which the celebrity hosts interpret through a personal and truthful improvised monologue. Inspired by that monologue, a cast composed of veteran Chicago and Los Angeles alumni perform scenes that, in turn, inspire a response from Armando. This propels hilarious interchanges between Armando's monologues and the company's scenes.
Click the link above for more information.