String Covers

[X-Yami-no-Ko-X]

So I would listen to very little Apocalyptica. The only cover I would listen to was Enter Sandman.

But my friend posted a link to a Gives You Hell cover by Vitamin String Quartet. I've been listening to them for the past like hour hour and a half.

So, if you have a favorite group that does string instrument covers of songs, what is it?
Do you prefer the covers over the original?
Do you start singing the lyrics when listening to the cover if the original had lyrics?

Edit: It wasn't Gives You Hell. It was I Write Sins, Not Tragedies.  

[Esiris]

I start singing along. sweatdrop