Raised in Lakewood, Ohio, and later Glen Ellyn, Illinois, he honed his craft at the Goodman School of Drama (now part of DePaul University) while training as an opera singer and performing as a rock-and-roll vocalist and guitarist. A Broadway debut as Danny Zuko in the original production of Grease (1976) led to a television breakthrough as Danny Dallas on the sitcom Soap (1977-81), where he appea…