The seven-film Fast & Furious franchise, but the series has only ever promised two things: high-speed thrills and angry violence. If you’ve seen even a few minutes of any installment, you know there's no skimping on either the fastness or the fury. It's a formula that has put the latest film, Furious 7, on top of the box office with a $143.6 million opening weekend and helped the series pull off the rare feat of becoming progressively more lucrative in later sequels.