There are 12 Cylon models who are indistinguishable from human beings. We've met seven thus far. Each has many copies and can regenerate itself. Popular theory: Adama is a Cylon. ''Really interesting, and probably really stupid,'' laughs Olmos.
The plot abruptly jumped ahead one year during the season 2 finale. Many whiplashed fans cried ''Gimmick!'' Flashbacks will soon fill in the blanks about what happened during those 380 days on the refugees' new home base of New Caprica.
What we do know? Apollo went soft. Literally: Bamber is donning a prosthetic fat suit this year. Perhaps it was because he had no war to fight; perhaps marriage to Lieut. Dualla wasn't such a blast. There was that as-yet-unrevealed encounter with Starbuck...
Baltar carries on a love/hate affair in his mind? with Number Six, who often appears to him (and nobody else). Is he coming unhinged, or did Cylons put a chip in his brain? Producers dig the ambiguity, but Callis thinks ''she's really there. It's a different reality.''
If you're still feeling frazzled, Sci Fi airs a one-hour recap special (Oct. 2 at 7 p.m.) that will bring you up to speed on the Cylons' motivations, Baltar and Roslin's fierce presidential race, and the real story behind the disappearance of Valerii's baby.