The problem with this movie is too many reaction shots
I watch this movie like a moth goes to a flame. I can't resist it, whenever I come across it, I watch. But it has not aged well.
My 15-year-old self loved this movie 30 years ago. Now, meh, not so much.
After every joke, they always have this reaction shot where the characters are reacting to the jokes. This really makes the jokes cheaper - the joke should either stand on its own, or it shouldn't be in the movie. Bad move on Mel's part to film it like this.
And it's so shticky. He cleaned out all the Borscht Belt comedians from the Catskills to make this movie, and boy does it ever show. Everyone's mugging for the camera and really trying to sell their jokes. It's too over the top. As a kid, I didn't know any better, but now I do. This one is pretty much a stinker all the way through.
Except I love that Last Supper sequence. And Harvey Korman is just plain funny no matter what.
I want the doctor to take your picture so I can look at you from inside as well.