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.

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.

Fourteen minutes of previously-unseen animation from Monty Python and the Holy Grail has been released on Monty Python's official YouTube channel. Monty Python's artist and animator, Terry Gilliam ...

To celebrate the 40th anniversary of Monty Python and the Holy Grail, the venerable troupe releases animation that didn't make the film.