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.
Graduated from UC Berkeley.
As of Oct. 2010, he is an entertainment lawyer in Beverly Hills, CA.
Appeared with other The Goonies (1985) cast members for a commentary section of the film's DVD. [August 2001]
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).