Airplane!

It is sophomoric, obvious, predictable, corny, and quite often very funny. And the reason it's funny is frequently because it's sophomoric, predictable, corny, etc. Example: Airplane Captain (Peter Graves): Surely you can't be serious. Doctor (Leslie Nielsen): I am serious. And don’t call me Shirley. This sort of humor went out with Milton Berle, Jerry Lewis, and knock-knock jokes. That's why it's so funny.

Roger Ebert

Chicago Sun-Times

A sometimes silly, occasionally hilarious, and often sophomoric spoof of airline disaster films in which a passenger tries to land a disabled plane. Some of the jokes are tasteless, but there is a general air of good cheer as the script laughs most of all at the already laughable Airport movie series. [11 July 1980, p.3-8]

Gene Siskel

Chicago Tribune