Family Guy creator Seth MacFarlane had a ticket for one of the flights that hit the World Trade Center on 9/11, but he was hungover and missed his flight.
Christopher Lee was a direct descendent of Charlemagne and was present at the last public execution by guillotine in France. The guy had an absolutely amazing life and was a total badass.
Rowan Atkinson actually has a crippling stutter. This is where his hilarious manner of speech comes from; he isn't doing it to be funny, but to pronounce words easier. He particularly has a problem with the letter B, hence his pronunciation of 'Bob', 'wibble', etc.
Ryan Gosling stayed with Justin Timberlake for a while when they were younger. Justin's mom was Ryan's legal guardian for nearly a year.
Tom Hanks is an avid supporter of NASA's manned space programs and originally wanted to be an astronaut, but "didn't have the math."
He was awarded the Douglas S. Morrow Public Outreach Award in 2006 for his contributions to raising public awareness of space programs.
Danny Trejo (Machete) became famous for his tough guy roles as he was actually a drug addict who was sent to prison. After serving his sentence, he decided to become a counsellor to others suffering with drug addictions. One of his regulars was a production assistant on a film called Runaway Train and he asked him to come visit him on set one day as he needed advice. The director of the film saw Trejo and asked him to star as a tough guy in Runaway Train and so began his acting career.
Before they were internationally known, Aidan Gillan (AKA Littlefinger on Game of Thrones) starred in the UK version as Queer of Folk, and had some pretty explicit sex scenes with Charlie Hunnam.
During the filming of The Avengers, Robert Downey Jr. hid snacks everywhere. The food he kept offering people in the movie was the actor's own personal stash - it wasn't written into the script, the actor just got hungry and would pull out food. The crew couldn't keep up with all his hiding places, so they finally gave in and let him do it.
Katy Perry's cat's name is Kitty Purry.
Jackie Chan sings "I'll Make a Man Out of You" in the Chinese dub of Mulan.
George Clooney voices dogs on South Park, as well as other minor characters.
Mr. Rogers was personal friends with Koko the gorilla, and when she met him the first thing she did was try to take his shoes off, since that was what he always did first in the show.
Jack Nicholson was a volunteer fireman, complicating filming during The Shining, as he got through the prop door like a champ during the later part of the film. They used a normal door, possibly reinforced, to slow him down a bit.
Samuel L. Jackson was a member of the Black Panthers party and once took several employees hostage at a university with other party members.
Steve Buscemi was a firefighter early on in life. He put on his old gear and helped out at the World Trade Centre immediately after 9/11.
Tim Allen spent two-and-a-half years in prison for possession of about 1.5 pounds of drugs. The only reason his sentence was so short was because he named other dealers in exchange for a reduced sentence.
Tom Cruise's real name is Thomas Mapother the 4th. He originally wanted to be a Catholic priest, and came close to going down that path.
Al Gore's college roommate at Harvard was Tommy Lee Jones. At one point when they were freshmen, they got into a knife-throwing contest. Gore said, "I shudder to this day to see the results of that knife-throwing contest on a particular tree in the Harvard yard."
Benedict Cumberbatch once escaped a kidnapping while in Africa by telling his attackers that he would have a fit if sealed in an enclosed space, and that having a dead English man in the boot of their car would end poorly for them.
Robert Downey Jr quit doing hard drugs after he ate a really bad burger from Burger King that made him rethink his life and throw out all of the drugs he had in his car. He thanked Burger King for this in Iron Man, when Tony gets back from being a prisoner, the first thing he wants to eat is a burger from Burger King!
Jack Nicholson grew up thinking his mom was his sister and that his grandma was his mom. His actual mother got pregnant in high school and the family did a switch-a-roo and raised him to think his mom was his sister.
Matthew Broderick killed two women in Ireland due to reckless driving. He paid a $175 fine and served no time in jail.