Jennifer Ann McCarthy famed as Jenny McCarthy is an American anti-vaccine activist, actress, model, television host, author, and screenwriter who is widely known as the co-host of MTV’s dating game show Singled Out. She has appeared in a number of sitcoms and films including Basketball, Diamond Scream 3, and more. She has been described as "the nation's most prominent purveyor of anti-vaxxer ideology", although she herself says this is inaccurate. She is a very talented actress.