Something most people on this site don't know about me is that I'm a huge fan of choral music, especially a capella stuff. So when I found this, I jumped for joy:
Emocapella - Enjoy Your Day
It's an a capella version of the Alkaline Trio's "Enjoy Your Day," and it is beautiful.

Yes, I know, I'm a dork.

For more info on Emocapella, and if you want to download more a capella covers of bands like Taking Back Sunday, Jimmy Eat World, The Mr. T Experience, and more, go here.