Milton Berle's Mad Mad World of Comedy with guests Dick Martin, Eddie Quillan, Pat Buttram and Mort Sahl (1974)

Ignore the hokey credit crawl, this special is excellent. Not the nonsense you'd expect from a 1970s Milton Berle special, this is a fascinating series of interviews. This is surely the only time you'll ever see Milton Berle interview Mort Sahl about Lenny Bruce. This is a surprisingly exceptional special.