Odds are director James Gunn's Guardians of the Galaxy film will be a lot of fun, given Gunn's pedigree and the cast, but I'm not sure it'll top this video of Vin Diesel being so super-excited about playing Groot that the's walking around the set of Fast 7 on high-tech stilts, hosting impromptu gatherings to talk about his tree-alien role, and, most importantly, high-fiving Kurt Russell.

Diesel posted the video on Facebook. Check it out after the jump.


Near the end of the video, Diesel stops by the trailer of his "Guardians of the Galaxy brother" Djimon Hounsou (who'll be playing Korath the Pursuer) to talk about the role. He reveals what anyone familiar with Groot would already know: He's only got one line (presumably "I am Groot").

He adds, "I'm still going to make it the best thing I possibly can, even if it means taking Andy Serkis to a whole other level."

Serkis famously did the motion-capture and the voice for Gollum in the Lord of the Rings movies. Groot will be a motion-capture character as well.

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