Clayne Crawford (Riggs) and Matt Passmore (Gideon) also worked together in several episodes of the 1st and 2nd season of The Glades (2010), where the latter played a detective and the former played an informant in witness protection.
Hilarie Burton Morgan (Palmer) and Daniella Alonso (María) also worked together in several episodes of the 2nd season of One Tree Hill (2003).
Martin Riggs (Clayne Crawford) calls Roger Murtaugh (Damon Wayans) bulletproof. Wayans starred in the 1996 movie "Bulletproof".