You can have a movie with hardly any cuts, or very few cuts, that is fascinating, you can't take your eyes away from it... Look at some of the long takes in Citizen Kane.
“If you check your ego at the door when it comes to comedy, you've got a pretty good shot at making a great movie that you can commit yourself to, you can jump off the proverbial cliff with, and have a great time, and the audiences respond to that.”