Celebrate the 40th anniversary of "Monty Python and the Holy Grail" with this 14-minute video of previously unseen animations by Terry Gilliam, who also explains the inspiration behind his work.

"Monty Python and the Holy Grail" is celebrating its 40th anniversary and they just released 14 minutes of deleted animations. The List's Bradley Hasemeyer shares 3 facts about the movie, on The List!

Included in this Blu-Ray box set are a handful of new tidbits, the most intriguing of all being 14-minutes of lost animation footage with a commentary by Monty Python alum Terry Gilliam.

He wrote his own particle system library to generate interesting animations. If you don’t have a project box on hand this might work with an extra-deep picture frame.