It's a Wonderful Life
Wikisimpsons - The Simpsons Wiki
It's a Wonderful Life (1946) is a classic Christmas film by Frank Capra and a annual tradition to be shown on television in the United States during the Christmas holidays.
References
Mr. Burns' was partly inspired by the character Mr. Potter from this film.
The final scenes of When Flanders Failed where everybody gathers around with the Flanders family are a parody of the final scenes of "It's a Wonderful Life."
In The Last Temptation of Homer Homer is visited by an angel disguised as Isaac Newton to show Homer what his life would be like without Marge. In the film James Stewart's character is also visited by an angel disguised as Newton to show him what his life would be like if he commited suicide.
