Ben Affleck got a little choked up during last night's interview on Jimmy Kimmel Live. the actor fought back tears when telling a touching story about Adam Driver saving his son Samuel's 8th birthday party. As Affleck was filming a movie in London, he organized a collection of gifts to be sent to Los Angeles for Sam's special day. Unfortunately, the gifts didn't arrive in time and Ben was forced to show up empty-handed! To his surprise, Driver had a package of presents and a card signed by his Star Wars character, Kylo Ren delivered to his home. Ben presented the gifts to Sam and his day was made!

In an emotional interview, Ben explains the near mishap, stating, "Adam made me a hero to my kids and I will never, ever, ever forget it." Ben went on to say it was "a really good lesson in doing those small gestures of kindness. Because you have no idea. For him [it was no big deal], but it meant the f**king world to me. It meant so much!"