What movie did you see in theatres that had the loudest laughing reaction?

It can be any type of movie, it doesn't even have to be a comedy movie. But based on your own experience from going to the theater, which one in particular do you think had the most people laughing themselves off that everyone was just having a fun time?

For me, I think it would have to be when I went and saw the Hangover! That entire scene where the cops use the tasers on the trio and have the kids shoot them. I've never heard so many people laugh so hard that some people were running out of breath and coughing.

Such a hilarious experience!