<P> The song features Shinedown vocalist Brent Smith performing backing vocals . </P> <P> The music video first aired on MuchMusic in the middle of April 2008 . It peaked on the MuchMusic Countdown at #10 . </P> <P> The video features Serinda Swan and was directed by Colin Minihan . </P> <Table> <Tr> <Th> Chart (2008) </Th> <Th> Peak position </Th> </Tr> <Tr> <Td> Canadian Hot 100 </Td> <Td> 58 </Td> </Tr> <Tr> <Td> U.S. Mainstream Rock Tracks </Td> <Td> </Td> </Tr> <Tr> <Td> U.S. Modern Rock Tracks </Td> <Td> 17 </Td> </Tr> </Table>

Who is the girl in theory of a deadman so happy video