Wikisimpsons - The Simpsons Wiki
 American Boneheads: A Day in the Life of Springfield Elementary
American Boneheads: A Day in the Life of Springfield Elementary is a documentary made by Declan Desmond where he interviews the children at Springfield Elementary.
 Unnamed Lion Movie
After Bart upstages Homer's role in the family, Homer is watching an unnamed lion documentary by Declan Desmond. It is about a middle-aged lion (who resembles Homer) who loses his place to a younger lion (who resembles Bart) and does not want to be in the pit with an older lion (who resembles Grandpa) and decides to spend more time with the cub (who resembles Lisa). This then influences Homer to spend more time with Lisa.
 Growing Up Springfield
Growing Up Springfield is his most notable documentary. It follows the lives of the inhabitants of Springfield, starting when they were in third grade and continuing every eight years. It is similar to Michael Apted's Up! series.
 Minor Films
Other than his three major films in the series Declan has also made many minor films including Do You Want Lies With That?, and Ain't No Mountain High: A Blind Man Climbs Everest. Also two other documentaries that he made where mentioned, the two being "Lost Luggage, Shattered Lives" and "Up-skirt Dreams".
 Behind the Laughter
Declan is voiced by Eric Idle of Monty Python fame. Declan is also a British character and in Springfield Up Homer calls Declan "Doctor Who" - a reference to his voice actor trying out for the role of the Eighth Doctor in the 1996 Doctor Who movie.
He is based on real British filmmaker David Attenborough.