Got a biting wit? Show your fangs with MTV's new video contest. The winner will be announced Sunday, June 28, in Forks, Washington, by MTV News' own Larry Carroll, who is well-known to "Twilight" fans everywhere. Larry will be giving the valedictory address at a l "Twilight"-themed graduation happening at the real Forks H.S.  MTV wants graduating seniors to shout out to the Class of '09 w... more.