<Tr> <Td> 2002 </Td> <Td> Ring of Endless Light, AA Ring of Endless Light </Td> <Td> Zachery Gray </Td> <Td> Television film </Td> </Tr> <Tr> <Td> 2003 </Td> <Td> Young MacGyver </Td> <Td> Clay MacGyver </Td> <Td> Unsold television pilot </Td> </Tr> <Tr> <Td> 2005--present </Td> <Td> Supernatural </Td> <Td> Sam Winchester </Td> <Td> Lead role </Td> </Tr> <Tr> <Td> 2007 </Td> <Td> Room 401 </Td> <Td> Himself </Td> <Td> Host; 8 episodes </Td> </Tr>

Who plays young sam and dean in supernatural