In the episode “Hush, Hush Sweet Charlatan”, Darkwing and Launchpad are hiding out in movie scenes to avoid a studio guard. For one of the scenes, they reenact the staircase swordfight from Neville Sinclair’s movie in The Rocketeer. The music even matches.
Darkwing Duck and The Rocketeer both came out in 1991. Good year.
(Disney tended to borrow music from its movies for its television series back in the day. I distinctly recall hearing themes from Beauty and the Beast in Goof Troop, of all things.)