Former sitcom star Roseanne Barr ran in the 2012 presidential election as the Peace and Freedom Party's candidate. Initially, Barr promoted herself as the standard-bearer of the Green Party but later announced that she would run for president on the Peace and Freedom Party ticket. She declared her running mate as Cindy Sheehan, whose son, U.S. Army Spec. Casey Sheehan, was killed in Iraq in 2004. (Frazer Harrison/Getty Images)