David Albertus Trelawney Knijnenburg (/kəˈneɪnənbɜːrx/; born 3 April 1967) is an Australian stage, television and film actor, best known for playing Alfred Hitchcock in his stage production Hitchcock & Herrmann and in assorted roles in Twelfth Night Theatre's numerous stage adaptations of classic BBC television series such as Dad's Army and 'Allo 'Allo!. He is notable for his height – he is two metres (six-foot seven inches) tall. He was one of dozens of names mentioned during the media speculation over the casting of the eleventh Doctor Who after David Tennant announced his resignation.