If you don't know him specifically, he's the guy who edits all the Sam Tsui videos. If you don't know Sam Tsui, well, shame on you. His latest video, released today, is a one-take through his family's house with his brother Max singing with his girlfriend Victoria*. I gotta admit, probably one of the best music videos on youtube I've seen in a year or more. They also have the "making of" video at the end to show how they put it together. And yes, I realize both Max and Victoria are Nickelodeon celebs... but still majorly talented. Anyway, Kurt and Sam are amazing, so if you like this one, look into some of their other covers.
*I assume they're dating. Totally unsubstantiated.