During the ending sequence, the song "Movin' on up", from the TV series The Jeffersons (1975),is playing as Daryl walks into his building and tips the doorman, who is played by Sherman Hemsley. Helmsley starred in "The Jeffersons".
During the scene where Matthew Lillard's character thinks that Darryl has suffered an overdose, his friends who follow him in the room suggest that he needs a shot of adrenaline to the heart. This is a reference to Pulp Fiction (1994), in which Mia Wallace (Uma Thurman) suffers an overdose and is given a shot of adrenaline to restart her heart. NOTE: This method would not actually work if someone suffered an overdose.