Hard to say who's the bigger draw at this weekend's Dallas Comic Con at the Richardson Civic Center: Dean Stockwell, the 64-year acting vet who's got the sci-fi skins on the wall (Battlestar Galactica, Quantum Leap and Dune -- quite the trifecta) to go along with the critical cred (Blue Velvet, natch); Rene Auberjonois, who can whip out the Star Trek: Deep Space Nine, the Boston Legal or the Benson; or Barry Bostwick, the original Danny Zuko last spotted near Denton 'round 1975. Probably Stockwell, right? Just for the whole Roy Orbison thing.