Twice each day we scan our YouTube metrics as well as websites on the cutting edge of internet culture to discover the most buzzed about videos.

Justin Bieber Fan-Made Music Video	Homemade Lightsaber	Starting the Year with a Bang	New Year's Penguin

1. This fan-made music video spread quickly to become one of our Most Shared videos after Justin Bieber himself tweeted the clip himself, declaring it, "Amazing."
2. Gizmodo calls handiwork in this trending video "Probably the Best Do-It-Yourself Lightsaber Ever."
3. One of our Most Shared (and Most Viewed) videos from this holiday weekend was the elaborate fireworks display from New Year's Eve in London.
4. This video of an excited penguin was posted by a user in Japan in 2007, but it suddenly became one of our Trending Videos over the New Year's week and weekend.