Sadly I come from a country (Germany) where the audience rarely goes wild. Don't get me wrong, they laugh when something is funny, they jump at jumpscares, they do all the basic stuff. But we don't cheer, applaud or whatever during movies.

That said: Back in 1998 I attended a Star Trek night, where they showed all (back then) eight movies in a row and that crowd was just fun! After a short while we all even applauded at the best moments. Somethign that I never saw before or afterwards in a German movie theatre again.

That made it even more mindblowing for me when I visited Canada back in 2006 and at some point went to see Ice Age 2. The crowd went NUTS during that movie. (No Scrat pun intended) And I repeat: That was just Ice Age 2! I really wanted to catch Slither that weekend, but sadly couldn't find a theatre that played it.