The best vantage point for ringing in 2013, if you didn't mind sharing the moment with a million other people, was Time Square in New York City.
Ryan Seacrest, Fergie and Jenny McCarthy kept things lively with five hours of ABC coverage as part of Dick Clark's New Year's Rockin' Eve.
Not to be outdone, Anderson Cooper and Kathy Griffin hosted their annual CNN event from the same location. The newsman tweeted, "I want to apologize in advance to anyone @kathygriffin pokes fun of/makes out with/strips down in front of/punches."
Neil Patrick Harris tweeted, "I'm looking forward to 2013. My New Year's Resolution: underindulgence. Yours?"
Hosting Las Vegas gigs were 'Idol' judge Nicki Minaj and the tag team of Kim Kardashian and her baby daddy Kanye West.
Nicole Kidman posted a photo on Facebook that showed her looking down on Sydney Harbor when the clock struck midnight in Australia.
Crystal Harris became the new Mrs. Hefner, sharing a mirror image of her pink mermaid dress. More pics here.
Barack Obama hit Twitter to wish the nation a Happy New Year, sharing a photo of the First Couple enjoying a fireworks display ... though we know it isn't recent because she is vacationing in Hawaii with their daughters while he returned to Washington D.C. to deal with the Fiscal Cliff.
Photos: WENN, Twitter-Jenny McCarthy, Anderson Cooper, Barack Obama, Crystal Hefner; Facebook-Nicole Kidman