(Migrating the thread from IMDb)

• Mel and Vilma dancing on the wedding cake is a direct spoof on various Fred Astaire & Ginger Rogers dance routines.

Other users pointed out:

• The three guys walk along the hospital corridor, they add a little skip like Dorothy and her friends on the yellow brick road.

• James Caan's rocking trailer could be based on Charlie Chaplin's cabin in the Gold Rush.

• Engulf and Devour's trying to put on Engulf's coat is straight out of several Laurel and Hardy routines.

• The elevator lobby pinball scene is similar to a scene in Some Like It Hot.

• The Coke machine is reminiscent of Keenan Wynn's scene in Dr. Strangelove.

• Mel in the nightclub dancing in Spanish costume pays homage to Rudolph Valentino.