The Dude is secretly an heir to the Rubik's Cube fortune.
Because Steve Buscemi's character in "Fargo" didn't know when to shut up, Walter constantly tells Donny to "Shut the fuck up!"
The character of Walter was inspired by writer-director John Milius.
Johnie's Coffee Shop was not only the setting for Walter and The Dude's coffee scene, but it has also appeared in American History X and Reservoir Dogs.
The Dude is never shown bowling in the movie.
The Jesus' hilariously obvious bulge is thanks to a large bag of bird seed shoved down his pants.
Singer-songwriter Aimee Mann made a cameo in the film.
The character of The Dude was based off of Jeff Dowd, an independent film producer.
The F-bomb is dropped 292 times.
You'll hear the word "dude" around 161 times in the movie.
And The Dude says "man" 147 times overall.
Number of White Russians The Dude drinks: 9
We see Jackie Treehorn's thugs twice, and the second time they've switched shirts!
None of Donny's bowling shirts bear his actual name.
Charlize Theron was in the running to play Bunny Lebowski.
Bunny's license plate says "LAPIN," which is French for rabbit.
The photo of Bunny's farm is from Truman Capote's In Cold Blood.
There's a 9/11 conspiracy theory surrounding the film.
Walter's famous line, "This is what happens when you fuck a stranger in the ass!" was edited down so it could air on TV.
A lot of The Dude's clothes came from Jeff Bridges' closet.