Bad boy singer Robbie Williams was accosted by an irate audience member during a concert in Germany, Reuters reports. "The guy ran on stage and pushed Robbie off," said his spokesperson, who added that the unharmed pro immediately got back up and crooned six more songs for his fans. While his assailant faces the German authorities, Williams will perform alongside such luminaries as Eminem at the Brit Awards — England's answer to the Grammys — on Monday night.