Celebrity sightings at CES 2012

Justin Bieber, Snooki, Will Smith and others hawk latest gadgets (and themselves) at the Consumer Electronics Show in Las Vegas

While the real celebrities of CES are the zillions of new gadgets (see Best of CES slideshow), such a big Las Vegas show couldn't go on without at least a little assistance from a star-studded marketing crew of singers, actors, athletes and whatever you call the others. (Also see: Best/worst celebrity tech moments of 2011)

Nicole "Snooki" Polizzi

The "Jersey Shore" star, a self-described "guidette," pitches a long list of fashion goods. At CES, she did the honors for Zeikos/iHip, which sells assorted ear buds, headphones and Apple gadget accessories.

Justin Bieber

The Biebs helped Vietnamese toy and robotics designer Tosy launch a dancing robot.

Will.i.am

The Black Eyed Peas member holds his Intel-powered ultrabook like a boom box during a keynote address by Paul Otellini, president and CEO of Intel. Will.i.am is involved in an ultrabook creative campaign in which he tours 12 cities, creates 12 songs and engages in 12 philanthropic ventures.

Alistair Overeem

Mixed martial arts fighter Overeem gestures with Paul Jacobs, chairman and CEO of Qualcomm, during a keynote address. Overeem helped to promote mobile fight games at the Qualcomm booth.

Justin Timberlake

Recording artist Timberlake helped introduce Myspace TV, a social TV service that will be available on Panasonic televisions.

Kelly Clarkson

Singer Kelly Clarkson stands with Sony CEO Sir Howard Stringer after performing at a Sony news conference.

Ryan Seacrest

Television host Ryan Seacrest speaks at the opening Microsoft keynote, which got downright weird, when a gospel choir singing "tweets" appeared on stage as part of Microsoft CEO Steve Ballmer's presentation.

Will Smith

The actor speaks during a Sony news conference as Sony CEO Sir Howard Stringer, left, and "Men in Black 3" director Barry Sonnenfeld look on.

Seth Green

The actor known for his work in Austin Powers, Robot Chicken and Family Guy talks up video apps.