Joy made his feature debut in Louis Malle's "Atlantic City" (1981). It was his character that sets the film's story in motion. He portrayed Dave, husband of Sally (Susan Sarandon), a small-time hood who steals a cache of drugs and uses a retired criminal (Burt Lancaster) as an errand boy. He is murdered and his death brings Lancaster and Sarandon together. In Milos Foreman's "Ragtime" (also 1981), Joy was Harry K. Thaw, the mentally-disturbed assassin in love with stage star Evelyn Nesbit (Elizabeth McGovern). Among his many other screen appearances are memorable turns as Madonna's musician boyfriend in Susan Seidelman's "Desperately Seeking Susan" (1985), Dianne Wiest's suitor who turns out to be homosexual in Woody Allen's "Radio Days" (1987), an agitated AIDS patient in Norman Rene's "Longtime Companion" and Sherman the Robot in "Millennium" (both 1989). He reteamed with Allen for a small role in "Shadows and Fog" (1991), and played supporting roles in James L Brooks' "I'll Do Anything" (1994), "Pharoah's Army" (as a Union soldier) and "Waterworld" (both 1995). Joy's TV work has been a bit more sporadic. He was in the CBS movie "Escape From Iran: The Canadian Caper" (1981), the story of a rescue mission devised by Ross Perot, and played an Israeli agent in "Sword of Gideon" (HBO, 1986). Joy has also appeared with Tracey Ullman and as Lorenzo Tapping in three "American Playhouse" (PBS) productions based on Owen Johnson's "The Lawrenceville Stories": "The Prodigious Hickey" (1987), "The Return of Hickey" (1988); and "The Beginning of the Firm" (1989). Adept with music, Joy was film composer, music director, associate producer and star of "The Adventure of Faustus Bidgood" (1986), an independent film he worked on after studying at the Sundance Film Institute.