Blinkx
Here's a cool site that's been getting some attention - it's called blinkx.
According to the site, it's the "world's largest and most advanced video search engine." It searches the Web for audio video content and uses visual analysis and speech recognition to catalogue the videos it finds. Pretty sweet, don't you think?
If you type 'KRZR' into the search field, you can watch up to 55 videos ranging from reviews and news clips to the aired ads and those left on the cutting room floor, such as this.