"I was pretty confident that I'd be playing something, if James Gunn could convince Marvel Studios and Disney to cast me. He's involved with the casting too, but if he could convince them to go along with him and agree with getting me on the roster, then yeah, I would have voiced Groot. Not a problem. Groot is an awesome character."

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Directing's the best part. Whenever I've directed something, there's this feeling of demand and focus that I like. And secondly, it means that you've gotten through all the writing stuff, and the producing stuff, and casting, and prep, and all those stages that are seemingly endless. So directing is sort of the reward for all the work you put in before. And then there's the editing, which is another amazing stage of the process. It's incredible the moments you can create.

— J. J. Abrams