Although comedian Robin Williams is better known to today's fans as the Oscar-winning movie star of Good Will Hunting and The Fisher King and the voice of the genie in Disney's Aladdin, he got his start as a manic comedian with boundless energy and lightning-fast improv skills. Joking that age has sapped his energy, his show at 8 p.m. Friday at Ruth Eckerd Hall in Clearwater is billed as "an evening of sit-down" comedy and a chat with his old friend, comedian, actor, writer and director David Steinberg. The two old friends will talk about a variety of topics such as films, Mork & Mindy, Hollywood anecdotes and the world according to Robin. Don't expect him to stay in his chair long. Tickets are $59, $89, $125. (727) 791-7400.