In season 2 episode 21, Danny Pudi appears in the background. In the NBC show "Community," Pudi plays Abed, who is a huge fan of "Cougar Town" and talked about being an extra after being invited to visit the set. In the season 2 finale of "Community," the "Cougar Town" actors who play Laurie and Travis make a cameo in the background of a crowd scene.
In season 4, Jules takes her father to the doctor for a check up. In this episode, a sign for a private practice can be seen, which is owned by Doctors Dorian, Reid and Turk. Those three are all main characters from Scrubs (2001) (Dr. John Dorian = Zach Braff, Dr. Elliot Reid = Sarah Chalke, Dr. Chris Turk = Donald Faison)
The show is set in Florida. With the exception of the pilot and episode 1.19, all episodes are named after Tom Petty songs. Petty is a Florida native.
In at least one episode, Jules (Courteney Cox) is watching Scrubs (2001). Bill Lawrence also created Scrubs, and his wife Christa Miller is in both shows.
Sam Lloyd's character from Scrubs (2001), Theodore "Ted" Buckland, also appears on Cougar Town (2009). The first time when the cul-de-sac crew travels to Hawaii to bring Travis back. Ted tells Jules that he came to Hawaii because his girlfriend Gooch, who was also on Scrubs (2001), left him for Hooch, a surgeon from Sacred Heart Hospital where Scrubs (2001) takes place. Ted appears a second time with his band "The Worthless Peons", who also appeared several times on Scrubs (2001).