Watch the special effects guys f*ck up Optimus Prime

We've got an exclusive behind-the-scenes clip from the new Transformers: Revenge of the Fallen DVD/Blu-ray, showing how the visual-effects artists bang the crap out of Optimus Prime.

The DVD and Blu-ray are on sale starting today in two-disc special editions and a single-disc DVD, from DreamWorks Pictures and Paramount Pictures in association with Hasbro; distributed by Paramount Home Entertainment.

The two-disc Blu-ray and DVD feature more than three hours of special features, including a multi-chapter documentary, interviews with the cast and crew, an all-access featurette following director Michael Bay through an entire day, a comprehensive exploration of the "confidential files" on a dozen of the characters, multi-angle breakdowns of some of the most sensational action sequences and more.

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