We Had To Borrow The Costume, So Go Easy On It
It's called The Worst Fight Scene ever. And yes, that may be so. But consider this, it's a clip from a 40 year old, very low budget TV series, that has been watched almost 7 million times in just over 700 days at YouTube, let alone the hundreds of other places it can be seen online. I wonder if they ever contemplated how much simple pleasure, and laughter, this would bring to so many people in the 21st century?
It should be called The Best Worst Fight Scene Ever. I love how Shatner has to be so careful 'fighting' the alien so that the costume doesn't fall apart. You just don't get that kind of realism with CGI.