Williams first rose to fame from the stand-up comedy circuit in the 1970s, with a manic improvisational style all his own. He appeared on the sitcom "Happy Days" and then starred as a lovable alien on its popular spin-off, "Mork & Mindy," from 1978 to 1982.
More from CBS News.
Copyright Copyright 2014 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.