Ever since last week's episode of "The Office," I've been wondering who took Michael up on his invitation to Sandals Jamaica after his girlfriend dumped him. Now, NBC has started airing a promo that might answer my question. In the clip, Pam points to a computer screen and says "Oh my god! Is that Jan?" Then a picture of a topless blonde on a lounge chair flashes onto the screen as Michael protests. If you missed it the first time, the one-hour holiday special airs again tonight. To find out who the mystery woman is, you'll have to wait until "The Office" comes back Jan. 4.