Just when we think we can't be amazed by by something on the internet, up pops an awesome N'SYNC medley video.

For using no instruments - wait - using the greatest instrument of all, the human voice, these guys have put together a greatest hit video of N'Sync songs, that we quite frankly can't get enough of.

All we can hope is that the awesome folks on Pentatonix do some more of these. If we're going nostalgic, how about Spice Girls or 98 Degrees? Do you take requests?