The Upright Citizens Brigade is an improvisational comedy and sketch comedy group that emerged from Chicago's ImprovOlympic in 1990. The most recent incarnation consists of Matt Besser, Amy Poehler, Ian Roberts, and Matt Walsh. The original incarnation of the group consisted of Besser, Ali Farahnakian, Drew Franklin, Adam McKay, Roberts, Rick Roman, and Horatio Sanz. Other early members included Neil Flynn, Armando Diaz, and Rich Fulcher.

The Upright Citizens Brigade began performing improv and sketch comedy at Kill the Poet in Chicago. Their first show was called Virtual Reality. The group followed with shows entitled UCBTV, Conference on the Future of Happiness, Thunderball, Bucket of Truth, Big Dirty Hands, The Real Real World, and Punch Your Friend in the Face.

In 1997, the Upright Citizens Brigade relocated to New York and began performing shows and offering improv training at Solo Arts Group. These shows and classes were so popular that the UCB were able to open their own theater, The Upright Citizens Brigade Theatre, at 161 W. 22nd Street in Chelsea on February 4, 1999, in a former nude dance club. On April 1, 2003, they moved to a new space at 307 W. 26th Street. In July of 2005, the UCB opened at the Tamarind Theatre in Los Angeles at 5919 Franklin Ave (between Tamarind & North Bronson Ave). The Upright Citizens Brigade have also been a featured performance in the Comedy Tent at the annual Bonnaroo Music and Arts Festival in Manchester, TN for the past three years.

Agents Adair, Antoine, Colby and Trotter both monitor and create chaos across the universe. The sketches you see throughout most of the show are different subjects being monitored. At the end of each episode all the sketches and characters come together into one final sketch. Besides all the sketches, they have other segments where the UCB Agents venture out with hidden cameras, and try to incorporate the content of their bizarre sketches into the real world. Written by Anonymous