The problem with this whole series (and I'm sure that I've said it each time) is that the episodes were originally shot in 4:3 full-frame but for these retrospectives they've stretched out the image to fill a widescreen TV...even the non-hi def broadcast.  That's so stupid!  According to reviews on Amazon, the purchased DVDs give you the option to view the original full-frame version.  I've recorded all eight episodes, so I don't think that I'll buy the DVDs, even for the correct aspect ratio.