I don't want to rent all 7 discs from Blockbuster.com if discs 6 or 7 only have special features. Blockbuster of course does not tell you this on their website and most others don't give a good description either.

i would imagine on those old x-files sets that the seventh disc ONLY has special features. The re-released sets only have six discs with no special features discs. so yeah, the seventh disc has special features and no episodes.