Josh Hopkins and Ian Gomez (Grayson and Andy, respectively) both really did appear in the Alanis Morissette videos that their characters supposedly did (Unsent and Hands Clean, respectively)
This episode makes a reference to "Seinfeld." Courteney Cox and Christa Miller both appeared on that show.
To spoof the title which no longer matches the content of the series, in the second season the producers started adding self-deprecating jokes to the show's title card. The one for this episode reads: welcome to "Cougar Town" This episode was written by the absolute worst writers we have on staff. (www.tbs.com/bradandemily)
After claiming she has never heard of Seinfeld, Jules (Courtney Cox) also says she has never heard of "Must See TV." This was a phrase NBC used to advertise its Thursday night lineup, which eventually included Friends, which Cox starred in.