Glenn Quinn | During my most hormonal years, he was the only reason I was still watching "Roseanne" anymore. I mainly preferred the show BEFORE Darlene got all broody and wore black all of the time. Anyway, he is sadly another actor who died too young on account of a drug addiction.
Glenn Martin Christopher Francis Quinn (May 28, 1970 – December 3, 2002) was an Irish actor in television and film, known for playing Mark Healy in the American sitcom Roseanne, and Doyle, a half-demon, on the 1999–2004 television series Angel, a spin-off series of the television series Buffy the Vampire Slayer.
Glenn Quinn. Played Doyle on Angel. Such a shame he passed.
Alan Francis Doyle (Glenn Quinn)- his wise-cracking Irishman/demon character was FAR too short-lived on "Angel"- Despite the nobility of his sacrifice, I would much rather he had lived on. (Alas, the actor himself has since died, robbing us of any chance to see more of him...) R.I.P.