I've been teaching the 7th graders about copyright and plagiarism, which is always cause for discussion and outrage (what do you mean I can't put an entire Sheryl Crow song in my presentation?!). If you haven't seen it yet, this fantastic video from the Media Education Foundation is lots of fun and useful for discussing both copyright and fair use. (Thank you for finding it, Leah Lindemann!)
I'm not entirely sure how legal it is--speaking of copyright!--but TubeTV from Chimoosoft is a great little app for Mac users that allows you to download videos from YouTube onto your computer in a Mac-friendly format which you can then play on your iPod or AppleTV (does anyone have that???)...or keep on your computer to show students.
Finally, Naveed Ahmed posted a great resource on the Teacher/Librarian Ning, which provides links to thousands of newspapers from around the world.