The real "Lost Episode" of Johnny Carson

Rico says that if you do a YouTube search, you'll turn up an old Carson show called The Lost Episode, but the one that refuses to be found is the one that Rico saw live (before the days of tape delay), circa 1969, when Lee Marvin appeared (for the last time) on the show, drunk out of his mind, and refused to rise to any of the conversational baits that Carson threw out until, sighing, Marvin shrugged and (as only Marvin could) said:

Johnny, who the fuck cares?

Needless to say, they went to a commercial and, when they came back there was a new guest...