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.

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1. Another Halloween light show hits our Most Shared list.
2. This wall acrobat is among today's Trending videos.
3. The new ad from Presidential Candidate Herman Cain is drawing lots of buzz, particularly with Cain's Chief of Staff smoking a cigarette.
4. This highlight real from the new Go Pro camera is being heavily shared today.