Wentworth Miller who plays Sgt. Adams in this episode refers that his fathers name was Michael, as is his sons name in this episode. Miller went on to play a Michael Scofield in the show Prison Break (2005).
In the pilot, Melinda looks for a name on a war memorial in the town square. The same name - "Lt. Ryan Beeman" (not the name she is looking for) - is the top name on two sides of the monument - under both "Gulf War" and "Vietnam War."
The trivia item below may give away important plot points.
About 53 minutes into this episode, when Melinda tells Michael she's been communicating with his dead father, Paul Adams, Michael kicks Melinda out of his home and says "must be great having supernatural powers" before slamming the door in her face. In 2003, the actor who plays Michael (Balthazar Getty) begins his recurring role as Richard Montana on the TV series Charmed as a male witch/warlock with "super natural powers".