(Updated 2/9/2009)
Attention parents, teachers, and random applicable others: Apple is giving away twelve free Sesame Street videos! They're all part of the series called Learn Along With Sesame. All you need is the iTunes application installed on your Windows or Mac computer (which you can download here if you don't already have it) and a free account with the iTunes Store (which you already have if you've ever bought a song there for your iPod).
Just as a note: if you want to watch the free Sesame Street goodness on your TV, you'll have to either own an Apple TV, or you can transfer the videos to an iPod and then connect the iPod to your TV. If you have any questions or tips, leave a comment!

Thanks for this good news