Spot the pineapple: a pineapple can be seen behind Shawn at the bachelorette party.
First appearance of Liam James who played Young Shawn until his final appearance in Season 5's Shawn and Gus in Drag (Racing) (2010)
The movie that Shawn tries to remember, "the one where they kill Donald Sutherland in the first five minutes." is The Italian Job (2003), starring Jason Statham and Donald Sutherland.
Exterior shots of the hotel are of the Fess Parker Doubletree by Hilton in Santa Barbara, California.
In the early seasons of Psych, the Santa Maria Sun newspaper makes an appearance in various scenes- sometimes in the background, other times in characters' hands. The Sun is a real newspaper from Santa Maria, CA, approximately one hour North of Santa Barbara, which is where the show is set.