The slow-motion jump from the boat is a tribute to the 80s television show The Fall Guy (1981), starring Lee Majors as a Hollywood stuntman who also is a bounty hunter.
Spot the Pineapple: When Gus and Shawn drive through the Meadow Parking Structure there is a pineapple on a column right before they see a body.
This is the first episode not to play the shows theme song during the closing credits.
The man who orders the Reuben in the diner (seen smelling the Russian Dressing) is played by Michael Roberds, the same actor who played the manager who robbed his own store in the series pilot, which is the case that initially got Shawn down to the police station where he invented his psychic powers. Whether it's the same character or not remains to be seen, though it's possible his jail sentence for the robbery he committed was a light one.
The 'houseboat' is actually the HMNZS Tarapunga, a decommissioned 1980' New Zealand military vessel.