Photo: Pamela Sisson/Allen Media GroupByron Allen is marking 20 years of Comics Unleashed with a two-hour primetime special on CBS. The network will air Comics Unleashed with Byron Allen 20th Anniversary Special on Tuesday, Sept. 29, from 9:00 to 11:00 p.m. ET/PT. CBS says the retrospective will look back at two decades of the comedy panel show while celebrating its place in the comedy world. CBS currently airs two episodes of Comics Unleashed each weeknight, followed by two episodes of Allen’s comedy game show Funny You Should Ask. The Comics Unleashed with Byron Allen 20th Anniversary Special will air Tuesday, Sept. 29, at 9:00 p.m. ET/PT on CBS.