Dennis Hastert's 2004 book Speaker: Lessons from Forty Years in Coaching and PoliticsHuh? No, the currently besieged Speaker of the House did not star in the 2000 film with Willem Dafoe and John Malkovich. The Amazon keyword search simply picked up on an actor named Patrick Hastert, who has the honor of playing "Reporter #3" in the film.
An "I Love J. Dennis Hastert" Long Sleeve T-shirt (?!?!?!)
An "I voted for J. Dennis Hastert" Keychain
The Shadow of the Vampire DVD
However, it is interesting to note that the film's plot concerns a megalomaniac who discovers that someone he is in charge of is habitually out harming others. Instead of acting out so that further harm is prevented, the megalomaniac keeps it a secret so that his own plans may not be disrupted. In the end, the man who has been harming people dies and the megalomaniac goes on to reap his success.
I'm thinking the parallels are going to stop before that happens, though.