re: What's the funniest movie

The thing that impressed me so much about Airplane — and to an extent Blazing Saddles — is it is not only a haha funny movie but is such a clever satire. They used celebrity walk-ons like Kareem; used the Notre Dame fight song for the pep talk; a flash of juggling boobs at the right time; the Singing Nun; jive talking; the propeller engine sound on a jet liner; and, of course, the use of dramatic actors killing it in comedic roles. So much perfection.