Joss Whedon released a PSA video on Wednesday for Save the Day - an organization that works to motivate U.S. citizens to register and vote. The celebrity-packed video urged people that voting is important and even offered an enticing promise if people vote. Mark Ruffalo will apparently do a nude scene if everyone votes, or so the video says! Save the Day is Whedon's new super PAC ?dedicated to the idea that voting is a necessary and heroic act.?