An American actor born in 1954 in Chicago, he rose to fame in the late 1970s and 1980s. He gained critical acclaim for his role in the TV series "Wiseguy," which aired from 1987 to 1990, playing undercover agent Vinnie Terranova. His work earned him a Golden Globe Award. He also appeared in films such as "The Wanderers" (1979) and "Fort Apache, The Bronx" (1981). His career was curtailed by injuries from a motorcycle accident, leading to his retirement from acting in the 1990s.