MC Hammer is again facing financial troubles. You might remember that he famously filed for bankruptcy back in 1996 after he was $13 million in debt (!). But his woes apparently didn't end there. TMZ reports that Hammer owes the U.S. government a whopping $779,585 in back taxes from '96 and '97. That might not seem like too much to someone like Jay-Z, who Hammer dissed last year with his "Better Run Run" video. But for the former rap star, this has got to be another big financial burden.