Sad, sad news:

He fulfilled his teacher's prophecy that the so-called "nerd" would have the last laugh in the end.

But "Jeopardy" phenom Ken Jennings' laughing days may be coming to a close, game show gurus say. After a 74-game winning streak that earned him more than $2.5 million, rumor is abuzz that Jennings' reign is about to end.

Or rather, those in the know - audience members and fallen foes - claim he was dethroned months ago. But in the not-so-tightlipped game show universe, these prescient souls claim that the fatal blow will air at 7:30 p.m. tonight. [IMPORTANT NOTE: local air time may vary -- LW]

The rumors, experts claim, could have some merit. Telltale signs include an ABC "Nightline" behind-the-scenes peek at Jennings' life, set to air later in the evening; and a party of Jennings' defeated comrades, also slated for tonight...