From Spite Your Face Productions:

Monty Python and the Holy Grail in LEGO, 2002, Spite Your Face Productions for LEGO and Python Pictures.

Uploaded by the creators with permissions. Produced in 2002 for the DVD release of it’s theatrical counterpart, this was the viral video before viral video that helped jump-start the Brickfilm genre of animation. Commissioned from an original pitch by Terry Gilliam.

[Spite Your Face Productions | Via BoingBoing]