Guy and Sam are mistaken for "Randy" and "Dave", likely a reference to the show's composer David Newman and his brother Randy Newman.
Guy is revealed to be ticklish (when the fish gets stuck in his vest). This is brought up again in "House", when Sam tickles him so they can access Guy's high-tech tree-house.
After Sam and Guy switch hats, Sam tells Guy, "You know, red is really your color." In "Here", Guy wears a red necktie.