A handsome, former stage actor turned lead and second lead on TV and in films, Sheridan is cable of projecting a range from good-guy niceness to cop toughness. Bitten by the acting bug after a knee injury ruined his chances for a dance career, he left California to pursue stage work, eventually scoring several impressive successes off and on Broadway, including a Tony nomination for his work in the 1987 revival of "All My Sons".Sheridan made his film debut with a bit part in "Jumpin' Jack Flash" (1985). He moved on to larger roles, including a co-starring part as the jealous boyfriend in