I already have The Muppet Movie, The Muppets Take Manhattan, Muppets From Space, and Kermit's Swamp Years (plus season 1

) so I only need to get The Great Muppet Caper, Muppet Christmas Carol, and Muppet Treasure Island.
I should probably get the Muppet Wizard of Oz, as well... It was somewhat enjoyable when I saw it on TV, although the lack of widescreen is disappointing (see the review on this site.)
I never could find The Great Muppet Caper, and it sounds like the Disney version is about the same.
I, like many others, have been boycotting the original Christmas Carol and Treasure Island because of the Pan & Scan, so these two will be a welcome addition. I will now probably try to find a copy of the old Treasure Island for the extras, if it is cheap.
I really wish Disney had foregone the addition of the Pan & Scan versions, and had included more substantial extras (including what is missing from the previous discs.)