I can’t vote in the US election in November but, if I could, I know who I’d vote for…and it’s not just because this video promises Mark Ruffalo will get naked.

Joss Whedon has launched Save the Day, a super PAC focused on encouraging Americans to get out and vote on Election Day.

The first phase of that effort is a star-studded PSA that features the likes of Robert Downey Jr, Mark Ruffalo, Scarlett Johansson, Don Cheadle, Julianne Moore and Leslie Odom Jr.

Bradley Whitford and Martin Sheen are in there too – even more reason why I support it!