Originally Posted by visaman666
That episode was burned off in September 1984, several weeks AFTER Happy Days was cancelled!
What's more, the episode was filmed more than a year before its original air date, since a clip from it (Chachi & Roger hit each other with cream pies instead of Fonzie, having expected Potsie to come through the door instead.) appeared in the S11 opening credits. A funny clip from the 1992 Happy Days reunion showed that Baio & McGinley creamed Winkler instead of each other in what had to be an earlier take.