Did any of the actors fight during filming?

Yes, during the behind-the-scenes there is at least one angry incident between the actors. Andy Serkis, who plays Gollum, actually pulls out Sean Astin's [Sam] wig and pulls out a bunch of his hair by accident. Sean was not happy and stormed off.

yeah when sams wig got pulled off.that was an accident true but sean got pissed.I know it had to of hurt but cut a guy a break he didn't mean to do that.But on a whole everyone got along.

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And There was a fight between well like a revenge argument thing anyways Andy and Sean. Apprantly Andy had pulled off Sean Astins wig and it comes flying off and then Sean just goes storming off then Andy is like to Elijah oh my god im so srry and all that then the next few takes was like okay so ur gonna be like that okay