Yup, that was pretty cool. I've seen this episode countless times by now, but that first battle between the Enterprise and Borg still gets my pulse pounding every time.
Although I have to say, as much as we've always thought this would make a great movie, the static direction and camera movement that was typical of the series DOES really stand out more on the big screen.
And I have to agree with those who felt the documentary beforehand slightly "spoiled" the event. Yeah, we've seen this episode many times before, but NOT on the big screen, and I was a bit annoyed that all the big moments were already shown on there by the time the ep actually started.