The option to rent episodes of TV shows is no longer available on either the Apple TV, or when browsing content via Apple’s iTunes application. Previously, participating networks offered users the ability to rent a TV episode for 99 cents, with 30 days to begin watching and 48 hours to complete it.
“iTunes customers have shown they overwhelmingly prefer buying TV shows. iTunes in the Cloud lets customers download and watch their past TV purchases from their iOS devices, Apple TV, Mac or PC allowing them to enjoy their programming whenever and however they choose.”
Too bad, I really liked renting TV shows.