Jenny Darren recently came out dressed in frumpy granny attire, then stripped and belted out "Highway to Hell" on Britain's Got Talent.
Her band once opened for AC/DC in 1977, so she's GOT talent.
This article also has other examples of shockingly good TV performances, like a Ukranian singer's version of Zeppelin's "Whole Lotta Love."
Also: An 82-year-old screaming Rob Zombie's "Dragula" on America's Got Talent.
Are you more shocked when a little kid or an old-timer can really sing?