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You've heard of Google Instant, well, how about YouTube Instant? Yes, this is a novelty toy built by a college student (Feross Aboukhadijeh of Stanford University), but it's a pretty fun way to pass a lazy Friday morning.
Google Instant --which allows you to search as you type -- burst onto the scene earlier this week, and in its wake it has left a few cool spinoffs, notably a video featuring Bob Dylan's "Subterranean Homesick Blues" (made by Google) and another playing off of Tom Lehrer's "Elements Song," but there hasn't been quite enough foolishness to come up with an awesome gallery or roundup.