These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The Other Darrin: The Lamborghini girls, Jill Rivers and Marcie Thatcher are played by Tara Buckman and Adrienne Barbeau respectively in the first film, but in the second film they are played by Susan Anton and Catherine Bach (Daisy Duke of Dukes of Hazard fame).
Retroactive Recognition: This was Jackie Chan's second attempt to break through to American stardom after the disastrous flop The Big Brawl. This film was more successful but he still didn't catch on (likely overshadowed by the numerous other stars) and had to wait until Rumble in the Bronx.