* PlayingAgainstType: Chris Elliott, of all people, in a straight role as one of the FBI techs.
* WhatCouldHaveBeen: [[http://www.avclub.com/articles/brian-cox,2424/ According to Brian Cox]], Brian Dennehy was "sort of in the loop" to play Lektor. Dennehy, for whatever reason, recommended that they check out Cox, who was performing in a play at the time.
* William Petersen was rather haunted by the movie and his role in it, according to TheOtherWiki and some of Petersen's fan pages. After filming finished, he cut and dyed his hair and shaved off his beard to get Will Graham out of his system.