The theme song of the series, "I Know, You Know", is performed by The Friendly Indians, the band of series creator, Steve Franks.
Kirsten Nelson was pregnant in real life when she auditioned for her role as Interim Chief Karen Vick. During the first few episodes, she gave birth; from that time on she had to wear a fake pregnant stomach for the remainder of her character's pregnant period, to compensate for her diminishing belly.
According to his “myspace” page, the following is a list of jobs that Sean Spencer held before becoming the CEO of Psych: Newport Sailing Assoc., Newport Beach, CA US Assistant Race Chair 2006 English, Inc. Kho Samui, TH Teacher, TEFL 2005 Comerica Park Detriot, MI US Concessions Vendor 2005 Apollo Agency Seattle, WA US Foot and Ankle Model 2005 Ben and Jerry's Burlington , VT US Customer Service 2004 Minute Maid Park Houston, TX US Concessions Vendor 2004 Aquablanca Expeditions San Jose, CR Raft Guide 2003 - 2004 U.S. Cellular Field Chicago, IL US Concessions Vendor 2003 Flynn Special Events Santa Barbara, CA US Event Planner 2003 Mo's Outdoor Decor Santa Barbara, CA US Christmas Light Hanger 2002 Graceland By Night, Inc. Memphis, TN US Tour Guide 2002 Miller Park Milwaukee, WI US Concessions Vendor 2002 Oscar Meyer Wienermobile Madison, WI US Driver 2001 - 2002 Safeco Field Seattle, WA US Concessions Vendor 2001 Feedback, Inc. Santa Barbara, CA US Mystery Shopper 2000 - 2001 Turner Field Atlanta, GA US Concessions Vendor 2000 Assemblyman Skip Warner El Paso, TX US Constituent Relations 1999 Camp Durango Silverton, CO US Water Ski Instructor 1998 - 1999 Barrett's Mardi Gras Universe Algiers, LA US Construction 1997 - 1998 Hampton Inn Austin, TX US Desk Clerk 1995 - 1996 Pacific Emerald Cruise Lines San Pedro, CA US Lifeguard 1994 - 1995
Shawn likes to tell people that Gus played Bud on "Cosby Show, The" (1984). Dulé Hill who plays, Gus, guest starred on "Cosby" once.
A pineapple appears somewhere on-screen in every episode.