During one conversation, Gus remarks that he could have made it to the White House, to which Shawn quips, "Yeah, maybe as an aide," and then says, "Sorry, Charlie." This is a reference to Dulé Hill's longtime role as Charlie Young, special aide to the president, on the political drama, The West Wing.
John Kapelos is the fourth cast member from The Breakfast Club to guest star on Psych, after Ally Sheedy, Judd Nelson and Molly Ringwald.
This is a nod to "The Blues Brothers" (1980) when Shawn says "Orange whip? Orange whip?" to Chief Vick and Detective O'Hara, which was spoken by John Candy's character while sitting with two police officers.
Gus says several times "I can fix that". Dule Hill says the same line in the movie Holes.
Spot the pineapple: in Gus and Shawn's Wetland project there's a pineapple juice box.