Would you go this far for R.Pattz? At the world fan premiere of the DVD documentary Robsessed about Rob Pattinson, the scene turned very ugly and one fanpire was trampled on the ground. Free posters were passed out and as if they didn't have enough Rob memorabilia already, two girls got in a serious quarrel over the last poster. "A massive fight broke out between two girls," an eyewitness tells FemaleFirst. "There was a lot of pushing and shoving, everyone was crowding around them. I heard gasps as one of the girls fell on the floor -- she had twisted her arm and was screaming for help. The poster had been ripped in two." Will the Robsession ever subside? What do you think?