the DVD version is great. you get additional footage such as JFK's Inaugural Address, One Day in Berlin, One Week in October, and The Last Two Days.
throughout the mini-series you see the tension between Hoover and both Jack and Bobby, you go along on the campaign trail with JFK, right up until the shots are fired in Dallas.
i surley enjoyed watching all of it.
My only complaint (and this might be isolated to my own Sony DVD player) is that the picture occasionally slows and then speeds up. This is not like a dual-layer pause but an actual slowing of the film and then a burst of speed to "catch up." It is only slightly irritating and does not warrant you not purchasing it, since it is only a minor problem. Overall, I was quite surprised to see the film and audio to be as crisp and vibrant as it appears. I can't help but guess that this DVD is a great deal better than having watched the original broadcast in 1983. And yes, it is expensive...but you are getting over six hours of material.