A holiday spin on traditional improv games, presented by Improvatorium and Combined Artform. Patrick Bristow (The Groundlings, Ellen) directs a rotating cast that includes Grant Baciocco, Kevin Berntson, Gareth Berrow, Potsch Boyd, Brian Clark, Jayne Entwistle, Peggy Etra, Alison Mork, Carrie Seim, Chris Sheets, Henry Watkins and Vanessa Whitney. Ho! Ho! Ho!

Sat., Dec. 3, 8 p.m.; Sat., Dec. 10, 8 p.m.; Sat., Dec. 17, 8 p.m., 2011