Visible on the phone panel in the final scene are Mulder and Scully from The X-Files (1993), Bender from Futurama (1999), Hank Hill from King of the Hill (1997), Thurgood Stubbs from The PJs (1999), Rupert Murdoch and Luke Perry.
When Marge talks to Homer through the radio, she speaks some of the lyrics to "Comfortably numb" by Pink Floyd.
The first time Homer refers to Jesus as "Jebus".
Microasia is a parody of Micronesia.