A Thousand Years by Christina Perri from the movie Breaking Dawn seems to be the most played and listened to song currently. Even my students have requested to learn this piece on the piano.
While browsing the web, I chanced upon this rendition for Piano and Cello by ThePianoGuys.com. I thought it is something different from the usual Piano and Voice arrangement or Guitar.
I have attached the video here for your listening pleasure. Enjoy!