Barnes and Noble Coupon

I have a coupon from Barnes and Noble, it's good online and is 30% IN ADDITION to all other discounts.

30% of any one item from Barnes and Noble and I'm...at a loss. I don't want to get something too expensive. I've spent too much lately as it is so what do you think?

Harry Potter: Film Wizardry

Third season of Sarah Jane

Pirates of the Caribbean: The Price of Freedom

Or a fourth option that I NEED to watch, read, listen, etc. and haven't remembered?

And if you could tell me what that is...