Six Feet Under the Sea - S3-E10
Continuity mistake: As Shawn's dad is showing him how to drive the boat, he is alternately leaning against the railing with his arm outstretched, and with his arm at his side, depending on the camera angle. (00:20:25)
Truer Lies - S3-E14
Continuity mistake: When Shawn and Gus are being chased in Gus' car through the alley, in one shot the car trunk opens. The next shot it is closed, then when they stop it is open again.
Six Feet Under the Sea - S3-E10
Continuity mistake: When Shawn and Gus are driving the boat at night, we see the coordinates on the GPS tracker - two seconds later (real time, as they are talking), the coordinates have changed; now they are about 37 miles from where they were, so they must have hit 65,000 mph for those 2 seconds. In case my math needs correcting, the first set is 34 06' 50.25" N x 120 17' 41.31" W and the second set is 33 57' 40.21" N x 119 35' 56.58" W. (00:21:55)
Chosen answer: "Psych: The Musical" was supposed to air during the regular season 7 schedule, before Chief Vick is suspended and Jules discovers Shawn's lie, but the network decided to push it back to air as a special episode, sort of as a tie in with the holiday season and a lead in to season 8, which was to begin only a couple of months later.