since so many liked this, let me point out some of the better parts you might have missed; it's a long video and some of the better parts are in the back half. james brown puts on a SHOW and not just a concert, and if you're just putting it on to listen to in the background, you're missing some visual treats:
39:40 - making a point to show he's NOT looking at the 2 dancers when he suddenly syncs up with them as if to say "y'all think we DIDN'T plan this out?", followed by a couple group locks a bit later.
42:48 - maybe the funkiest 40 seconds i've ever seen, and my fav instance of a frequent dance move of his, even though the darn cameraman doesn't show his feet.
47:43 - at this point he's taught the audience what he wants them to sing, then taken some time to ask different parts of the band if they're ready, when he gets to asking the dancers... starting a short comedy routine about how over-excited one dancer is. the one dancer plays the straight man trying to reign him in, but whether he tries to hold his upper or lower half, the other half is still going wild.
the cape routine is of course in this, but it's a shorter version.
1:19:05 - i don't know how new strobe lights are in 1968, but it's clearly not the electric kind yet and is done with something that physically spins in front of the spotlight, and seeing james dance in strobe was likely pretty mindblowing at the time. b&w camera and cameraman weren't fully up to the task but still pretty cool. done with restraint only once as an end show kicker.
the comments all say the band was super-tight this night, but i know less about how difficult the instrumentalism was. this WAS at the height of his power to demand perfection of his band (through frequent fines for being less than perfect) and that old big-band kind of perfectionism. shortly after, he'd fire his band and hire a bunch of teenagers that could play his songs, who he couldn't control half as well, and later left him to largely become parliament funkadelic.