For the first time since a Dec. 16, 2004 show at the Point Depot in Dublin, Ireland, Blink-182 took to the stage last night for a live performance – the first since the band appeared at the Grammy Awards show in February and announced their intention to reunite. The California-based pop punksters played an impromptu gig at a private event to unveil the new T-Mobile Sidekick mobile device at the Paramount Pictures lot in Hollywood, Calif.