The Dodge Challenger used by Royce in this episode is the same one Leroy Jethro Gibbs gets from his father in NCIS.
In this one, Brian Krause (Aaron Low) plays a priest. When he was on Charmed (1998) as Leo Wyatt, he played an angel. Seamus Dever also appeared in one Charmed "Freaky Friday" but did not interact with Krause.