Pop group Maroon 5 have joined the New Year's Eve (31Dec09) celebrations in Las Vegas by announcing they'll be ringing in 2010 with actor Jason Segal at The Pearl. The band will reportedly be supported by Forgetting Sarah Marshall and I Love You, Man star Segal. Maroon 5 won't be the only pop stars headlining a New Year's Eve party in Sin City - Christina Aguilera is throwing a bash at Tao Las Vegas.