You've probably already heard about this, but I wanted to share in case you haven't. The nice guys over at Helios have posted a voice track by a professional voiceover artist, pitching Linux as a product. It's already running on the air on KLBJ AM.
The best part? The raw tracks are available for download and released under the Creative Commons Attribute-ShareAlike 3.0 license. No attribution is necessary. You can find it in mp3 or ogg format, whichever you prefer. Cut, splice, hack, lay tracks under it as you wish.
It's great that Linux will get on-air time as a "product" to help promote itself as a great PC platform. It shouldn't all be about Windows, guys. I'm really excited to see what the Linux community makes of this. Should be interesting!