What's New With Alex Trebek?

"Jeopardy!" host recycles one of his signature looks with a vote to see whether he should keep it.
1:29 | 09/17/14

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Transcript for What's New With Alex Trebek?
should we say, final jeopardy! A big change as the game show begins its new season this week. And here's a hint. The category, facial hair. And the answer? Well, that's yet to be determined. Here's ABC's nick watt. The host of jeopardy! Alex trebek! Reporter: Alex trebek ushered in season 31 of "Jeopardy!" Sporting an old friend. Because I had nothing to do in those six weeks, I regrew this. Reporter: Absent since '01, trebek's stache is back. It's raising eyebrows and dividing opinion. Battling hashtags on Twitter. "Digging the lip caterpillar" from the keep it camp, "Come clean" from the anti-bristle brigade. Welcome to -- Reporter: From episode one -- Jeopardy!. Reporter: Trebek has sported a lustrous soup strainer. That was back in the days when every virile male had a badger on his lip. Reynolds, Selleck, Billy Dee, 50% of the village people. Then, lip luggage became a figure of fun, the preserve of comical foreigners like boat. King in the castle. King in the castle. Reporter: Now, hipsters and the odd cebrity sighting have brought lip fuzz back into a man's range of acceptable facial fur options. Trebek says he'll shave or not based on audience reaction. Personally, I vote he also brings back the mullet, from high rollers, back in the late '70s. Nick watt, ABC news, los Angeles.

This transcript has been automatically generated and may not be 100% accurate.

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