Humans built with awareness of pentatonic scale?

Just to prove that I do have hobbies outside of ranting about the government, though that in itself provides plently of material, I am including a link to an experiment conducted by Bobby McFerrin. The following video suggests that fundementally humans are hard wired to recognise certain musical patterns?! I am not a musician but its quite interesting to see an audience, an unrelated mass, being unified almost magically.