Acting

2020		Stars in the House (1 episode) as Self
2020		Star Trek: Picard (1 episode) as Professor James Moriarty

2018

(1 episode) as Vic Wallace

2014

(1 episode) as Jacob Skolimski

2013

(2 episodes) as Baldur Magnusson

2012

(1 episode) as Antoine LaGrange

2010

(1 episode)

2006

(1 episode) as Dr. Morgan Remus

1997

(1 episode) as Judge Barton Wolfe (2 episodes)

1994		Chicago Hope (2 episodes)
1994		Duckman (1 episode)

1993		Intimate Portrait (1 episode) as Niles (archive footage)
1993		The Nanny (145 episodes) as Niles (1 episode) as Niles (voice)
1993		Frasier (1 episode) as Dr. Shafer

1987		Star Trek: The Next Generation (2 episodes) as Professor James Moriarty
1987		Frank's Place (1 episode) as Arnold David Tuney

1986		L.A. Law (1 episode) as C. Howard Grady
1986		Matlock (1 episode)

1985		MacGyver (1 episode)
1985		Tall Tales & Legends (1 episode) as Congressman
1985		The Equalizer (1 episode) as Eddie Mason

1984		Murder, She Wrote (1 episode) as Neal Dishman
1984		Highway to Heaven (1 episode)

1983		Scarecrow and Mrs. King (2 episodes)
1983		The A-Team (1 episode) as Phillips

1982		Remington Steele (1 episode) as Pierre Fumar
1982		Cheers (1 episode)
1982		Cagney & Lacey (1 episode)

1981

(4 episodes)

1980

(323 episodes)

1971		Columbo (1 episode) as Alex Varrick
1971		Great Performances (1 episode) as Moulineaux