Appeared on stage in such productions as "Ubu Roi" and "Hamlet"
Made American TV debut as Tybalt in "Romeo and Juliet" for "The Shakespeare Plays" on PBS
Joined the Royal Shakespeare Company
Originated role of Le Vicomte de Valmont in RSC's West End production of "Les Liaisons Dangereuses" opposite Lindsay Duncan; reprised the role in the RSC's production on Broadway in 1987; earned a Tony Award nomination for his performance
Gave acclaimed perfomance in title role of HBO movie "Rasputin"; won Emmy Award
Co-starred with Helen Mirren in the London stage production of "Antony and Cleopatra"
Played an angel in Kevin Smith's comedy "Dogma"
Reteamed on stage with Lindsay Duncan for a revival of Noel Coward's "Private Lives"
Again played Professor Snape in "Harry Potter and the Chamber of Secrets"
Starred opposite Mos Def in the HBO drama "Something the Lord Made"; a dramatization of the relationship between heart surgery pioneers Alfred Blalock and Vivien Thomas; earned an Emmy nomination for Outstanding Actor in a TV Movie
Reprised role of Professor Snape in, "Harry Potter and the Prisoner of Azkaban," the third book in the 'Harry Potter' series
Reprised role of Professor Snape in "Harry Potter and the Goblet of Fire"; adapted from the fourth book in the fantasy series by J.K. Rowling and directed by Mike Newell
Directed the play "My Name Is Rachel Corrie" at the Royal Court Theatre in London; based on the writings of the 23 year old American woman who was killed on March 16, 2003 by an Israeli Army bulldozer
Co-starred with Sigourney Weaver in the drama, "Snow Cake"
Reprised the role of Professor Snape in "Harry Potter and the Order of the Phoenix," the fifth book in the fantasy series
Played the lecherous Judge Turpin, opposite Johnny Depp, in Tim Burton's "Sweeney Todd: The Demon Barber of Fleet Street"
Portrayed English wine expert Steven Spurrier in "Bottle Shock"
Reprised the role of Professor Snape in "Harry Potter and the Half-Blood Prince," the sixth book in the fantasy series directed by David Yates
Re-teamed with Tim Burton to play the Caterpillar in "Alice in Wonderland"
Reprised role of Professor Snape for the seventh and final installment of the series directed by David Yates, "Harry Potter and the Deathly Hallows"; film released in two parts, Part 1 in November 2010 and Part 2 in July 2011
Cast in the world premiere of Theresa Rebeck's "Seminar" on Broadway
Co-starred with Colin Firth in crime comedy "Gambit"
Appeared in "Lee Daniels' The Butler" as Ronald Reagan
Co-starred in romantic drama "A Promise"
Starred in punk biopic "CBGB" as bar owner Hilly Kristal
Co-starred with Helen Mirren in war drama "Eye in the Sky," the final film he released in his lifetime