- Jack was a competitive freestyle mogul skier in his younger days. He was also a freestyle ski jumper, his signature jump being the "720".
- Jack had a very small role as the piano player in the nightclub scene in Norma Jean & Marilyn (1996).
- Jack met Vladimir Horowitz just one month before the legendary Russian pianist passed away.
- He is an avid collector of rare books and first editions.
- He was a competitive tennis player whose nickname was "Borg" because some girls thought he resembled Bjorn Borg.
- He studied Modern Theater with famed Beat poet/playwright Michael McClure.
- He studied acting in New York City with Elaine Aiken at The Actors Conservatory, as well as William Hickey at HB Studios.
- His favorite actor is Steve McQueen.
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