theatre List of improvisational theatre companies Upright Citizens Brigade Theatre Del Close External links Second Nature website Official website of The Fracas! Improv Festival The Fracas! Podcast, audio and video interviews with professional improvisers List of Second Nature alumni Notes American comedy troupes Sketch comedy troupes Theatre companies in Los Angeles Improvisational troupes Performing groups established in 2002 University performing groups 2002 establishments in California Comedy collectives