@mistoffelees A lot of these clips from the Extended Version of the films. They have a lot of behind the scenes specials/footage. They did all kinds of interviews with cast members and there are lots of stories like this. Well worth watching if you enjoy the screencaps/movies.
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They also have the actors'/directors/etc commentary over the movies too
I have the DVDs of the extended versions, but only ever seem to have time to watch the cinema versions. I need to plan in a day or two (or three) to watch everything!
I said it already but I'll say it again: they're very much worth watching imo. Lots of funny banter, more insight into what was going on or why certain things happened the way they did, and even some feelgoodstuff (like Viggo Mortensen buying the stunt-double for Arwen the horse she had been working with during filming). If you have the time and are remotely interested then absolutely go for it :)
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They also have the actors'/directors/etc commentary over the movies too