As we all know, Halloween was on Monday. Ghouls, goblins, ghosts, and gremlins filled the streets going to different houses for the ultimate prize: free candy. But trick-or-treating, carving pumpkins, nor free candy was as popular this year as the video Halloween Light Show 2011 - Party Rock Anthem found on Youtube. This awesome video shows a house's decorations that are synced to the famous song Party Rock Anthem by LMFAO. This stunning display of lights and singing jack-o-lanterns on the window make this video fun.