Many thought this explosive franchise was done until this, the fourth film in the series, attracted a serious amount of bums on seats and gave the series a new, financially swish and creatively fulfilling beginning. Featuring the late Paul Walker and Vin Diesel, it might not be the strongest of the six films (that honour goes to Fast 5), but it delivers everything you'd expect from a action flick; fast cars, handsome dudes and gorgeous women.