I know, this is, like, the fourth Sam Tsui review in a row, but that's cause he's so good.
http://www.youtube.com/watch?v=9TonYtSDTdE&feature=relmfu
This is the only one of his covers so far that's actually pretty close to the original. It has Kurt Schneider, who is also an amazing musician on YouTube.
So the music... is great...
The video is them singing...
I give this a 10/10.