From the context, it was behind-the-scenes footage that Mr. Shatner shot while filming Star Trek V:
Let's take a look, keeping in mind that your laughter will likely be considered disruptive of the workplace:
While I don't know if I'm going to like the rest of Fall on Your Sword's work, they have certainly earned a visit from me to their eponymous website. If you enjoyed this one as much as I did, you may want to check them out as well...
"Why is he climbing a mountain?" And here I thought the big question in ST:V was "What does god need with a starship?"