Thor star Chris Hemsworth showed off his hammer skills during a Whack-a-mole game with U.S. chat show host George Lopez on Tuesday night (10May11). The Aussie hunk, who plays the hammer-wielding god of thunder in the new comic book blockbuster, and comedian Lopez donned Viking helmets for the arcade game contest. But Hemsworth was 'hammered' by Lopez 120 points to 110.