Widescreen (and not just matted), with video quality that is usually unheard of on DVD and 5.1 tracks that just plain rule (especially for TV shows), plus commentaries for ALL episodes, and all for a VERY low 50ish bucks per season. This is atypical of TV shows on DVD. Look at shows like Star Trek or The Sopranos...expensive, not many extras and poor transfers. IMO MGM has really stepped up with the last two box sets. Sure, it's not AS good as it could be, but it's better than to be expected, better than average, so I am not complaining.
It's just that the people who put together the eventual box-art are either smoking huge amounts of rock, or have never seen the show.