YouTube's most viewed video of all time is an unlikely champion. Seen more than 170 million times since its posting in May 2007, "Charlie Bit My Finger" was never meant to be anything more than a family flick. But the Internet's hive mind saw something it liked and catapulted the clip, which depicts a laughing British baby gnawing on the finger of his crying brother, past "Evolution of Dance" as YouTube's views champ by the fall of 2009.