The impotence of environmental-advocacy docs, even in an age when green has become chic, is that they preach to the choir and too often feel like homework—though Fuel is at least more valuable than the eco-martyrdom of No Impact Man. Joshua Tickell’s inconvenient truth is that oil companies are the devil, biodiesel is an imperfect but good start, algae is awesome, and so is Willie Nelson. It’s a slickly enjoyable production (if unfocused and bloated), and his bullet-point tips are persuasive; but dude, there are better ways to humanize these issues than crying on camera.—Aaron Hillis
Now playing; AMC Empire 25. Find showtimes