Rez,that particular special has been shown about 3 times this year (last time at 3am! Couldn't sleep,happened to catch it.)
They may pull it out again at "pledge" time,if you can bear the "breaks". ..but if you have a PBS store in your local mall,they may have it.
I forgot to mention,I also tear up a bit because I know these folks wont be with us much longer and it felt like such an honor to even get to see them once,even if it was just on TV.