At the end of the Live DVD, after the credits on the 'Thanks to' screen, press the Up button on your DVD remote. This will highlight the name 'Shayne Stacy'. Press enter on that name, and you'll be taken to a video of Dave Grohl throwning his Cymbols... more
Ok, watch the credits of the DVD. When the screen goes black, and starts to list the thanks, scroll your mouse or use your dvd remote to highlight. A square will be highlighted. Click it to see how Dave Grohl uses his Zildjian symbols!