<Li> Peter Sallis (1990--2010) </Li> <Li> Ben Whitehead (2009, 2011--present) </Li> <Tr> <Th> Theme music composer </Th> <Td> Julian Nott </Td> </Tr> <Tr> <Th> Opening theme </Th> <Td> "Wallace and Gromit" </Td> </Tr>

When was the first wallace and gromit made