The Movie that launched a Thousand Careers

Perhaps I exaggerate but it was a rocket to fame for more than a few:

It made it's star into a super-star.

It gave us Cousin Balki stealing scenes from the lead.

One of it's other co-stars went on to a decent career, performing in every dumb movie made between 1984 and 1992.

And Damon Wayans as the Banana Man...come on now!