The Upright Citizens Brigade Theatre | 6,695 followers on LinkedIn. The Upright Citizens Brigade (UCB) is the comedy powerhouse founded by Amy Poehler, Matt Besser, Ian Roberts and Matt Walsh. We run two theatres in New York and two in LA, where we feature improv, sketch and standup seven nights a week. We also operate one of the largest improv training centers in the country, with classroom facilities on both coasts.