We already know that Vin Diesel will be playing the giant tree alien Groot in the "Guardians of the Galaxy" film adaptation at Marvel Studios.
Now, Diesel has also confirmed that his dialogue in the film consists of only one line - "I am Groot." Posting a video from the set on his Facebook page, Diesel says:
"My father taught me there are no small roles, only small actors. I have one line in the movie, but that doesn't mean anything. 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, which is what we wanna do with our motion capture."