
Acting
Daniel Davis (born November 26, 1945) is an American stage, screen, and television actor best known for portraying Niles the butler on the popular sitcom The Nanny, and for his two guest appearances as Professor Moriarty on Star Trek: The Next Generation, affecting an upper class English accent for both roles. He also voices the intelligent Cro Magnon, Longhair from the Longhair and Doubledome cartoon shorts from Cartoon Network's Big Pick.

The Prestige
as Judge

The Nanny Reunion: A Nosh to Remember

Longhair and Doubledome: Good Wheel Hunting
as Longhair (voice)

The Nanny: Oy to the World
as Niles (voice)

The Perfect Tribute
as Gov. Curtin

Palomino
as Doctor

The Hunt for Red October
as CPT Charlie Davenport (USS Enterprise)

Havana
as Marion Chigwell

K-9
as Halstead

The Spirit
as Teasdale

Elsbeth
as Dr. Yablonski · 3 ep.

Star Trek: Picard
as Professor James Moriarty · 1 ep.

Stars in the House
as Self · 1 ep.

New Amsterdam
as Vic Wallace · 1 ep.

The Good Fight
as Professor Harrison · 1 ep.

Gotham
as Jacob Skolimski · 1 ep.

The Blacklist
as Baldur Magnusson · 2 ep.

Elementary
as Antoine LaGrange · 1 ep.

The Fran Drescher Show
1 ep.

Ugly Betty
as Dr. Morgan Remus · 1 ep.
The Practice
1997