Animal Crackers (1930)

In this early Marx Brothers film:

• the many slapstick scenes and verbal gags with Captain Spaulding (Groucho Marx) - Groucho's most celebrated character - leading the rousing "Hooray for Captain Spaulding!" (Groucho's familiar theme song)
• the leg-holding scene
• the unbelievable boxing/wrestling match between the Professor (Harpo Marx) and Mrs. Rittenhouse (Margaret Dumont)
• the lunatic bridge game
• Spaulding's greatest monologue about his African exploits
• the business letter dictation scene
• the verbal nonsensical duels of wits between Spaulding and Ravelli (Chico Marx)
• the Professor's famous silverware-dropping routine