Intriguingly, although the original 'contingency plan' for The Cage to shoot 10 minutes extra material to pad it out to feature length for screening in theatres, *has* become reality: 'The Menagerie' is effectively exactly that, and IIRC a few old stories from this very forum, has even been screened in movie theatres, via digital projection.
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Yes, the TOS-R version of 'The Menagerie' had a special one-night theatrical showing, I think back in '07. It was fun to see TOS on the big screen in any form. I was disappointed that they didn't have any souvenirs or mementos, though.
Kor