Verizon's FIOS HD cable comes with DVR, and though I rarely watch tv, I appreciate that I can hand pick the shows I want to see and watch it when I have down time.  The problem is that my days are so full, I have a backlog of recored shows a gigabyte long.  Yet in the year and a half I've had FIOS, there's one show marked 'do not delete' that I've had on repeat since the first week I got cable: Radiohead From the Basement performing "In Rainbows."
Watch them perform Reckoner: http://www.fromthebasement.tv/artists/radiohead/performances/reckoner

This episode of From the Basement is a beautiful intimate studio session with the greatest living rock band.  They seem unguarded and free, playfully and perfectly making their last album come alive.  Over at vimeo, you can now watch the entire show...and download it for your ipod/iphone.  Check it out, but be warned, you might have to mark this do not delete for at least a decade.