Handy tip if you want to see how TV shows on iTunes will look on your TV -before- you purchase them. Andrew writes “Unfortunatly, iTunes does not let you save the 30 second previews of music or video. While thats not really an issue with music, many people want to know how good the video looks when played on their TV or iPod. So how did I get the urls of the above videos. I used Debug iTunes Music Store.” Link.
HOW TO – Save iTunes TV show previews