One of Robin Williams' much lesser-known roles was that of Marcus, the acquaintance of a recently deceased man.  Marcus sets out to help the man's widow cope with her loss.  The man's widow is played by Carol Burnett.  It was all part of the 1987 TV special Carol, Carl, Whoopi & Robin.  Carol Burnett, Carl Reiner, Whoopi Goldberg and Robin Williams starred in what turned out to be my introduction to all four stars.  Watch it here!

[H/T Jeremy Fenech/Cars 108]