Oh, Daft Punk. "Harder, Better, Faster, Stronger" has to be one of the catchiest songs of all time, but lyrically? Well, the title's about all you need to know. It's O.K., though, because the song's repetitiveness enabled the awesomely creative hand dance dubbed "Daft Hands," which has had close to 40 million views since it was posted to YouTube in 2007.