The Maltese Falcon is rare, but not unique. Three copies were made for the movie after Humphrey "Butterfingers" Bogart dropped the original prop and dented its tail. Two props are actually 50-pound lead statues, and one is only six pounds, for when the statue needs to be carried on screen. Leonardo DiCaprio bought one of the props at auction in 2010 for $305,000. (Source)

Kasper Gutman is dangerous, but not that dangerous. The atomic bombs dropped on Nagasaki was allegedly named "fat man" because of its resemblance to actor Sydney Greenstreet, who plays Kasper "Fat Man" Gutman. That's quite an infamous legacy. (Source)

Perhaps to compensate for the 1941 film's seriousness, a comedy "sequel" was made in 1975, starring George Segal as Sam Spade Jr., son of Sam Spade, who once again finds himself in the middle of a chase for the Maltese Falcon. The film also featured Lee Daniels and Elisha Cook Jr. reprising their respective roles of Effie the secretary and Wilmer the thug. (Source)

The world's largest private yacht, with 11,000 square feet of living space (i.e., the size of 30 NYC apartments squished together and dropped into the water) is named The Maltese Falcon. (Source)

The plot of The Maltese Falcon is often spoofed, like in "The Maltese Canary," an episode of The Sylvester and Tweety Mysteries in which Tweety Bird is mistaken for the mysterious Maltese canary. (Source)