'Ukulele' Connection

Tonight I watched "Joe Versus the Volcano," (1990), On Demand. Joe's ukulele had a recurring presence in the movie. Then, when the movie ended, I turned on Nick@Nite to find a 1997 episode of "Roseanne" on, (big shock there). But the point I'm making is that at the end of the show, David is taking ukulele lessons from Tiny Tim.

How often do you see ukuleles period? Then twice in one night, on two different shows?