15 Secrets Not Even Super-Fans Know About “Friends” Funny The storied TV show has been analyzed and pulled apart in every which way, by both fans and pundits alike. But just when you think you know all the secret details surrounding Friends, new information pops up aimed to shatter your universe. At least the next time you find yourself face to face with a super-fan, you’ll be able to hit them (verbally) with the following fascinating bits of Friends trivia. 1. Bruce Willis appeared on the show for free after losing a bet. Comic Book Resources While shooting the movie The Whole Nine Yards (2000), costars Matthew Perry and Bruce Willis engaged in a good-natured bet. Perry, convinced that the movie would top the box office ranks in its opening weekend, wagered that if it did, Willis would have to agree to appear on Friends for free. Needless to say, Willis ended up making a memorable guest appearance on the show… winning him an Emmy. Yes, an Emmy for his role as Ross’s enemy Paul Stevens. In his infinite generosity, Bruce donated his appearance fee to charity.