Graduated from UC Berkeley.
As of Oct. 2010, he is an entertainment lawyer in Beverly Hills, CA.
He was the President of the Associated Students of UC Berkeley and used to do the Truffle Shuffle on the sidelines during football games.
Mother and older sister appeared on the 26 June 2004 episode of TLC's Clean Sweep (2003) organizing their house of 32 years. Found in the mess (and shown on air) were head shots of Jeff around the time of The Goonies (1985).
Brother of playwright Edie Faye.
Got the chicken pox after he got the role of Chunk in The Goonies (1985). He showed up to the set anyway, afraid that they would have replaced him otherwise. To generate tears during his "confession" scene with the Fratellis, he thought of his mother dying.
Appeared with other The Goonies (1985) cast members for a commentary section of the film's DVD. [August 2001]
No relation to directors Rob or Larry Cohen, despite a popular misconception.