This is interesting (and unexpected); people are filming their computers running benchmarks (like, oh, Geekbench) and posting the videos to YouTube.
Most are the videos are shot by people claiming that Windows is better than Mac OS X (or that Mac OS X is better than Windows), and that their Geekbench results back up their claim. I'm not surprised by this; platform debates are an incredibly popular (and passionate) pastime for a lot of people and Geekbench, being cross-platform, can certainly provide performance data that can be used to support claims that one platform is faster (and thus better) than another platform.
I just wish these video comparisons were better. While some of them are pretty good, a lot of them are rather suspect; some compare apples to oranges, while others seem to cripple one platform to favor another.