The dancing claptrap heralds the coming of Borderlands 2, developed by Gearbox Software.
Borderlands - Tales from HQ: Loose Cannon Claptrap
Borderlands - Tales from HQ: Loose Cannon Claptrap is a student-made animated short with plenty of personality and humor.
+ 5 to Punching: A Bunkers & Badasses Prologue
Gearbox Software have released an animated short film for Borderlands 2.
Borderlands 2 - Intro Cutscene
You can now see the full introduction sequence for Borderlands 2, courtesy of Gamespot.