There's not much of a mystery about what Crank delivers. As promised, it's 85 minutes of action, with little in the way of encumbrances like dialogue and exposition, and only skeletal fragments of a narrative to keep things moving. For the most part, Crank rolls along with a tongue-in-cheek approach - the over-the-top action is delivered with a side order of cheese, and there's plenty of humor to accompany the testosterone and adrenaline (emphasis on "adrenaline") cocktail. In fact, since the only unique aspect of the action is the MTV-influenced manner in which the directors have chosen to frame their movie, one could argue that Crank works best as a comedy. It's occasionally funny, and some times very funny.
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