What is your favorite ‘fun’ movie?

I’m currently watching all the best picture winners in chronological order, at about the end of the 1940s right now (Hamlet is next up). And while it is cool to see the year by year winners, it is also pretty easy to get burned out. As I’m not only watching them but reviewing and rating every single one as well. Plus the B&W and outdated filmmaking over and over isn’t necessarily ideal for a marathon, not for me at least. So throwing a “fun” movie in there between every few films helps with the burn out.

The only one I’ve watched so far has been Game Night (2018) and that one fits what I’m looking for perfectly. A fun, interesting, but not too serious movie. What other ones are there?