Aayyyy! At 29, Henry Winkler was cast as Arthur “Fonzie” Fonzarelli in the TV series Happy Days. He made his Broadway debut in 42 Seconds to Broadway in 1973. His other Broadway credits include Neil Simon’s The Dinner Party and The Performers. Winkler is the also co-author of the children’s book series Hank Zipzer, the World's Greatest Underachiever, based on his early struggles with dyslexia.