Keanu Reeves gave $75 million of his Matrix sequels paycheck to the film’s SFX team and bought the entire stunt crew Harley Davidson motorcycles.

After witnessing a hit-and-run accident, he got an ambulance and paid for the victim's $7,000 emergency room bill when he found out she wasn't insured.

Johnny Depp always travels with his Capt. Jack Sparrow costume to make impromptu visits to sick kids in hospitals. Johnny Depp also often goes to Disneyland and sometimes even dresses up as Captain Jack unannounced and takes over for signature time with the kids.

“I was at a shoe store in Cleveland about 4 years ago. I think it was Finish Line. And I'm looking at the new Lebron shoes, (mind you that I'm only 18 at the time), and a huge shadow appears over me. And I turn around, and it was Lebron James standing there. He smiled and said "you want my new shoes" I stumbled over my words for a few seconds then said yes I think I'm going to buy a pair right now. He then asked me my size, went up to the front desk and bought me 2 pairs. 1 he signed, and he said the other was for me to practice my post moves in. One of the best days of my life.”

He is literally the coolest and nicest guy you could every meet, he took about 45 minutes so he could make sure he could take a picture with people who wanted one and sign all of their playbills from the show.

A five year old boy, dressed up as Harry Potter, was walking along the street when a young woman came up to him and said, “Excuse me, are you Harry Potter?” After he mumbled out a yes, she said, “That’s great, because I’m Hermonie Granger and we’re best of friends” and she gave him a big hug.?Of course the boy was too young to realize that it was indeed Emma Watson, who couldn’t have been nicer.

Before the release of the Harry Porter series’ fourth book, “Harry Porter and Goblet of Fire”, JK Rowling wrote the book’s ending a year early for Natalie McDonald, a little girl diagnosed with leukemia. Natalie died before reading JK’s email, so JK named a character after her. That character was sorted into Gryffindor.

Rapper Tupac Shakur received a letter from the parent's of a terminally-ill boy named Joshua, saying it was Joshua's last wish to meet Tupac. Tupac then flew out to Maryland to meet the boy. When Joshua passed away, Tupac changed the name of his publishing company to "Joshua's Dream."