Apple has just made some back-end changes to the iTunes Store cloud as the new iOS 4.3.3 firmware updated for Apple TV went live a couple of minutes ago.
As demonstrated above you cano now re-download any perviously purchased tv shows in iTunes. You can still rent tv shows from the Cupertino giant alonside this new features and comes on top of the options to already re-download purchased apps, e-books and music in desktop iTunes.
This seems to be the start of the iClould era!!