If you watched The Swan last night, you probably saw, A) some seriously heinous tooth decay, and B) an ad announcing the Jan. 3 premiere of Fox's paternity game show Who's Your Daddy? If you thought the latter was just a joke, think again. The long-rumored project — first announced at press tour last summer by rival network head Jeff Zucker — revolves around an adopted woman who must figure out who her father is among eight contestants. The twist? Right before her pa is unmasked, the world comes to an end.