Michael Gambon
From Tardis Wiki, the free Doctor Who reference
Sir Michael Gambon, CBE (born 19th October 1940) played Kazran Sardick and Elliot Sardick in A Christmas Carol.
A highly respected theatre actor, Gambon is recognised for his role as Philip Marlow in the acclaimed BBC television serial The Singing Detective and for his role as Albus Dumbledore in the Harry Potter film series (from The Prisoner of Azkaban onwards, replacing the late actor Richard Harris, who passed away not long after The Chamber of Secrets finished filming).