"RSS is a crucial enabler for IPTV. Take the TV show model - new episodes of a show generally go out once or twice a week. Using RSS, rather than remembering to tune in at the same time every week and drop what you're doing, the latest episode of the show is pushed to you in MPEG format for you to watch wherever and whenever you want. Isn't that far more convenient?"
Check it out over at Bit Tech.