Has an allergic reaction to metal which prevents him from wearing his wedding ring at times.

Friends with actor Ron Eldard.

Family: His father's name was Amram. From a Russian-Jewish family he was a Brooklyn-born publicist for the American Jewish Commitee, died on 23 August 2003 from heart disease. His mother's name is Margaret. She is of Scottish ancestry. Brother, Daniel Ducovny, sister Laurie, and a stepbrother named Jonathan Sahula. Duchovny means 'spiritual' in Russian.

Uncle of twin boys Gabriel and Luca (b. May 2004), sons of his sister Laurie and brother-in-law Michael Birnbaum.

Has filed a $25 million lawsuit against the producers and syndicators of "The X Files" (1993) alleging he's been cheated of his contractual share of profits from series.

He kept three dogs and four cats as a child.

Is a former vegetarian but does not consume red meat.

He does a very good impersonation of Jeff Goldblum, as demonstrated during his appearance on "Saturday Night Live" (1975).

Dated Sheryl Lee and actress Perrey Reeves (June 1994 to 1996).

When he isn't in Vancouver to shoot "The X Files" (1993), he resides in Malibu, California.

Made his film debut in Working Girl (1988), as one of the guests hiding in the bathroom at Tess's surprise birthday party.

Speaks Hebrew.

Was ABD ("All But Dissertation") when he left Yale, so he never actually received his graduate degree. The title of his uncompleted doctoral thesis was "Magic and Technology in Contemporary Poetry and Prose."

He is known to be a sports fan, and has appeared on MTV's "Rock n' Jock Softball Game".

Played scholarship-level basketball during some of his high school and college career. He had an accident while playing basketball in high school which damaged his right eye.

Chosen by People (USA) magazine as one of the 50 most beautiful people in the world. [1996]

24 April 1999: Daughter, with Téa Leoni, Madelaine West Duchovny born. 15 June 2002 son, 7lb. 10-ou. boy, Kyd Miller Duchovny.

Was the subject of the song "David Duchovny" by Bree Sharp.

While at Yale, he was classmates with Jennifer Beals, whom Duchovny suggested for a part on "The X Files" (1993) (it eventually went to Gillian Anderson).

Speaks French and Latin.

Stayed in 411 Witherspoon Hall his freshman year at Princeton.

Was partially responsible for moving the filming of "The X Files" (1993) series from Vancouver to California.

His mother taught at Grace Church School in N.Y.C. and had a portion of the building named after her when she retired.