Timothy L. "Tim" Reid (born December 19, 1944) is an American actor, comedian and film director best known for his roles in prime time American television programs, such as Venus Flytrap on WKRP in Cincinnati (1978-82), Marcel "Downtown" Brown on Simon & Simon (1983-87), Ray Campbell on Sister, Sister (1994-99) and William Barnett on That 70's Show (2004-2006).