With the presidential election just about a month away, celebrities are teaming up to ensure everyone exercises their right to vote. Pals Leonardo DiCaprio and Tobey Maguire are behind the nonpartisan "Vote4Stuff" campaign, which features the likes of Ellen DeGeneres, Zac Efron, Joseph Gordon-Levitt and Selena Gomez urging people to vote for anything they want, as long as they vote. "Dogs would pick up my poop in a plastic bag," suggests Jonah Hill. "See how they like it." Sarah Silverman throws her weight behind "gays in the military -- exclusively." Check out the surprisingly funny clip here.