Try your hand at pairing this year's celebrities with their sponsors.

<p>Celebrities will add their star power to the 2012 International CES that starts next week in Las Vegas. While stars are no strangers to the consumer-technology tradeshow, this year's roster is the biggest to date, featuring Hollywood actors, sports legends and big-name recording artists.</p> <p>The celebrity-product pairings have often left attendees scratching their heads. Last year, Lady Gaga appeared on behalf of Polaroid to bring back its old-school cameras, cellist Zoe Keating played in the Intel booth and newscaster Piers Morgan joined hip hop artist Common to drum up enthusiasm for BlackBerry's Playbook.</p> <p>Before you see who's lined up for next week, try matching up this year's celebrities with their sponsors:</p> <p><b>Celebrities:</b></p> <p>50 Cent</p> <p>Justin Bieber</p> <p>Dennis Rodman</p> <p>Greg Gunberg (Heroes)</p> <p>LL Cool J</p> <p>Snooki</p> <p>Jabbawockeez (America's Best Dance Crew winner)</p> <p>Chicago</p> <p>James Bond film directors (John Glen, Martin Campbell, Michael Apted)</p> <p> <p><b>Sponsors:</b></p> <p>TOSY Robot</p> <p>Panasonic</p> <p>GM OnStar (auto systems)</p> <p>iHip (audio accessories)</p> <p>Paltalk (chat rooms and webcams) <p>Qualcomm (computer processors)</p> <p>Dolby</p> <p>SMS Audio</p> <p>Monster Cables</p> <p>For the pairings and their appearances, read on.</p>

50 Cent

<p>When: Tuesday - Thursday, Jan. 10 - 12 between 3 and 4 p.m.</p> <p>Where: South Hall, Las Vegas Convention Center, Booth 20818</p> <p>What: 50 Cent will be signing autographs on the show floor to promote his audio company SMS Audio and a new line of wireless headphones.</p>

Justin Bieber

<p>When: Wednesday, Jan. 11 from 1 - 3 p.m.</p> <p>Where: Robotics TechZone located in the LVCC South Hall on ground level</p> <p>What: The Grammy-nominated platinum-selling popstar will unveil TOSY Robotics' entertainment robot.</p>

Dennis Rodman

<p>When: Thursday, Jan. 12 from 2 - 3:30 p.m.</p> <p>Where: South Hall, LVCC, Booth 26915</p> <p>What: The NBA Hall of Fame player will launch Paltalk, a service that allows users to explore the online world of chat sites with community chat rooms and webcam technology.</p>

LL Cool J

<p>When: Tuesday, Jan. 10 at 2 p.m. and 4 p.m.</p> <p>Where: The earlier appearance will be on the CNET stage in the South Hall Lobby of the LVCC and the later appearance at the Dolby Booth 8153 in the Central Hall of the LVCC</p> <p>What: Star of the hit CBS drama "NCIS: Los Angeles" and recording artist will introduce new audio technology from Boomdizzle and demo a track at Dolby on a home-theater system.</p>

Snooki

<p>When: Tuesday, Jan. 10 from 2 - 4 p.m.</p> <p>Where: South Hall, LVCC, Booth 21920</p> <p>What: Nicole "Snooki" Polizzi, known for her role on the reality-TV show "Jersey Shore," will sign autographs to promote iHip's new line of personal audio accessories.</p>

James Bond films directors: John Glen, Martin Campbell and Michael Apted

<p>When: Tuesday, Jan. 10 at 1:30 p.m.</p> <p>Where: Central Hall, LVCC, Booth 9806</p> <p>What: Panasonic will host Twentieth Century Fox Home Entertainment's second annual Directors' Panel, including Glen, Campbell and Apted, celebrating the fiftieth anniversary of MGM's James Bond. Former Bond girls Olga Kurylenko ("Quantum of Solace") and Caterina Murino ("Casino Royale") will also be on hand.</p>

Jabbawockeez

<p>When: Tuesday, Jan. 10 at 8:30 a.m.</p> <p>Where: Palazzo Ballroom at the Venetian Hotel</p> <p>What: The hip-hop dance crew best known for winning season one of MTV's “America's Best Dance Crew” will perform as the opening number to Qualcomm's keynote address.</p>

Greg Grunberg

<p>When: Wednesday, Jan. 11 from 1 - 5 p.m.</p> <p>Where: North Hall, LVCC, N254</p> <p>What: Television actor Greg Grunberg from NBC's "Heroes" will join General Motors OnStar for its Tweet House sessions, the official social media track for CES.</p>

Chicago

<p>When: Wednesday, Jan. 11 at 8:45 p.m.</p> <p>Where: Paris Hotel</p> <p>What: The legendary band will headline at Monster, Inc.'s annual Retailer Awards and Concert.</p>

Celebrity Watchers' Alert for 2012 CES