TVGuide.com has learned exclusively that Tricia Helfer has joined the cast of Them, the Fox pilot being shepherded by her Battlestar Galactica boss, David Eick, and concerning sleeper cells of extraterrestrial terrorists. Previously announced to the cast are James D'Arcy, Rachel Nichols, Ben Feldman and Reg Rogers. Before you start speccing on what this means for BSG's Six, TVGuide.com has it on good authority that if Them gets picked up in May, it's entirely possible that Helfer - who will go dark (meaning brunette) for this new gig, which she starts shooting Monday - could do double duty, seeing as how, you know, Eick is a big cheese at both shows. Out-of-this-world hottie Helfer on two TV series? That I'm not sure the human race could handle.

Speaking of BSG , here's an update on the Caprica prequel, posted over the weekend.