The website ParalympicSport.tv just got an overhaul, and the interface is a little easier to use. (If you're using a Mac, you'll need the Flip4Mac plug-in, which is a little cumbersome.) The site has footage of the Torino Winter Games as well as the Athens Summer Games, and there seems to be some new content also.
If I may make some recommendations, check out the footage of the first Winter Paralympic Games, from Örnsköldsvik, Sweden, in 1976. The narration's in Swedish, which is kind of amusing if you find Swedish as funny as I do. And then maybe you'll want to relive the glory (heh) of my 5th-place finish in the Torino downhill, which you can watch here. The problem is that you have to watch a very large amount of pre-race coverage, plus the visually impaired classes, the women's sitting division and some extensive course holds, before you get to the men's sitting category, and on a Mac at least, there's no way to fast-forward or jump to the segment you want to watch. Still, it's worth waiting for Kevin Bramble's awesomely balls-to-the-wall winning run and subsequent obscenity-laden trash-talking in the finish area.