Celebs promise Mark Ruffalo will get naked in his next movie if Donald Trump isn't elected

"Lots and lots of famous people" have come together in a video to urge Americans to get out and vote on November 8, with a not so subtle hint that voting for Donald Trump is really bad idea.

As part of his new 'Save the Day' campaign, director Joss Whedon gathered together a group of his famous (some more than others) collegues, as well as one or two members of the general public to encourage people to make their votes count in the upcoming US Elections.

Hey! Did I miss anything? Lol jk the world is on fire 😂 here's a thing I made https://t.co/g1SE45Rkrv

— Joss Whedon (@joss) September 21, 2016