The X-Files connections?
Jerry Hardin plays a friend of Hutton's father who gets Hutton his job.
Penn tapes an X on a street pole when he wants to get the Russians to meet with him.
In X Files Jerry Hardin plays Deep Throat, one of Mulder's government informers.
Whenever Mulder wants to meet another of his government informers, Mr. X (Steven Williams), he tapes an X on his window.
Coincidence or maybe Chris Carter loves this movie?