GL finding HBO shows on Netflix. Also not going to wait a year once the show is done running to buy the boxed DVD set.
Now if you could buy a season pass per show for a reasonable price, WHILE it's currently airing (instead of making everyone wait months for it to finish), I personally think that's a much better alternative than paying 20-30bucks a month on top of your cable bill for a single show.
http://movies.netflix.com/WiMovie/Game_of_Thrones/70177064?trkid=2361637