He later returned to the series in season fourteen as a writer and executive producer for the episode "How I Spent My Strummer Vacation".

[1] Don Payne, John Frink and Bob Bendetson began writing for the series, while Larry Doyle, Julie Thacker and Tom Martin left following the completion of this season.

[2] Matt Haigh of Den of Geek said that "The bad episodes are never really terrible, it's more that they're a bit boring and will most likely have you yawning 10 minutes in.

[6] Composer Alf Clausen was nominated for the Primetime Emmy Award for Outstanding Music Composition for a Series for "Simpson Safari".

When Homer refuses to pay a five dollar airport tax to fly to Delaware, the family is forced to ride in a livestock car of a train instead.

There they meet a singing hobo who tells three tall tales: The DVD boxset for season twelve was released by 20th Century Fox in the United States and Canada on Tuesday, August 18, 2009, eight years after it had completed broadcast on television.

The boxart features Comic Book Guy, and a special limited edition "embossed head case" package was also released.