I hadn’t realized it before, but the iTunes Store has the complete West Wing in 1080p HD for a mere $75. Since you can’t buy it on Blu-Ray, this is the only way to get the series in HD. It looks like it was released on the iTunes Store last December.
I would say this is the best dramatic TV series ever. Grab it; if you haven’t seen it, this is a good occasion to watch it. If you have seen it, then you know that it’s worth getting in HD.
While you’re at it, you can also get The Wire in HD from the iTunes Store. Interestingly, this is quite different from the DVDs. It was shot in 16:9, but David Simon preferred the 4:3 aspect ratio, so it was broadcast in that format, and the DVDs were also in that format. The HD release is in 16:9, with many of the scenes looking quite different from the originals. (You can also get The Wire on Blu-Ray.)