Say what you will about the video quality of iTunes content, but it sure is convenient to download an episode or two of a show that you missed when it aired. The web elves that run the iTunes Store are determined to make it even more convenient it would seem, as they have gathered all the TV season finales available for purchase on one page [iTunes link]. Everything from American Dad to Battlestar Galatica is listed for your viewing pleasure. Be sure to check back because shows are going to be added daily.
Now if you'll excuse me, I need to find out if Sylar is stopped (warning, if you don't like spoilers I wouldn't click that Sylar link).