"Hurt" by Johnny Cash - originally by Nine Inch Nails
"Put Your Hand On Your Heart" by José González - originally by Kylie Minogue
Both of the above make my heart swell.
EDIT: Oh, and because it was infinitely better than the (actually decent) original, I loved Calvin Harris's rendition of Natasha Bedingfield's "I Wanna Have Your Babies", which he performed on Radio 1's Live Lounge a few months ago over here.
Haven't heard Harris' version, but people keep nagging me to hear it, saying how good it is. Because of you Capo, I might check it out.
