There are countless videos about the WoW characters' various dances. Each race and sex has their own dances: most are based on real dance styles, many of them are immediately recognizable. This is a better-than-average vid showing toons dancing with footage of the dance source material. They are very well synched, and the vidder even took the effort to put the WoW animation in costumes to closely match the originals whenever possible.
Unfortunately, this does not include all the dances, but only the ones for which the vidder could find appropriate clips. For more information, see here.