Alan Rickman

Alan Sidney Patrick Rickman (born 21 February 1946) is an English actor and theatre director. Rickman is best known for his performances in film as Hans Gruber in Die Hard and Severus Snape in the Harry Potter film series, as well as extensive stage work. He is also known for his prominent roles as the Sheriff of Nottingham in the 1991 blockbuster film, Robin Hood: Prince of Thieves; as Colonel Brandon in the Oscar-winning 1995 Sense and Sensibility; as Elliot Marston, alongside Tom Selleck in the movie Quigley Down Under; and, more recently, Judge Turpin in Tim Burton's Sweeney Todd: The Demon Barber of Fleet Street, Steven Spurrier in Bottle Shock, and as Éamon de Valera in Michael Collins. Source: Wikipedia