On ABC, in the original ending, the ending gag (Urkel crashing through the Winslows' roof and off into the night when his jet pack goes haywire) crossed over with the ABC series "Step by Step." The gag - excised from syndicated episodes and ABC Family airings - ended with Urkel crashing on the Lamberts' lawn in Port Washington, Wis. However the gag was shown again in reruns in the opening teaser of the Step by Step episode "The Dance" to which that episode was crossed over from.
As Steve lifts weights, he doesn't have a spotter and becomes trapped under them. Behind him, on the wall, there's a sign that says, "Don't forget, use a spotter."
The first episode in which Urkel accomplishes a feat of science that would be impossible in real life.
This episode features Steve Urkel's first of a long line of inventions.