' showstopper Elizabeth Berkley
, a real-life gal pal of Threshold
star Carla Gugino
, has landed a big guest spot on the Nov. 11 episode of CBS' supernatural drama, a show rep tells TVGuide.com. Berkley will play a pregnant alien infectee, which could be cool, just as long as we don't have to see her and Kyle MacLachlan
doin' the splishy-splash.