Mark talks about being a copy boy at the Associated Press, David Cassidy picking him up when he was hitchhiking, being in Tiger Beat magazine, meeting George Harrison on a plane, his new movie The Long Walk based on the first book Stephen King wrote, the lead actor Cooper Hoffman not wanting to meet him, and having a screening of the movie where the audience walked on treadmills. Watch 'Jimmy Kimmel Live!' WEEKNIGHTS 11:35/10:35c on ABC. Stream on Hulu.