I suspect I'm a bit late onto this but the Black Cab Sessions site is a really neat idea, perfectly executed. Raw, up close performances. No Pro Tools or auto tuning here.

The above pic is from Martha Wainright's performance (which includes the lyric that titled her last album - "I know you're married but I've got feelings too"). Also on the site are The Cool Kids, Fleet Foxes and Bon Iver.

AND Brian Wilson (WATCH!).

Awesome: Black Cab Sessions