The Upright Citizens Brigade Theatre (UCB) is a renowned comedy venue and training center located in New York City and Los Angeles. Founded in 1990 by a group of comedians, including Amy Poehler, Matt Besser, Ian Roberts, and Matt Walsh, UCB is known for its emphasis on improvisational comedy and sketch performances. UCB offers classes for aspiring comedians and hosts regular shows featuring both established and emerging talent. The theatre has played a significant role in shaping modern comedy, influencing many performers who have gone on to achieve success in television and film.