The film was apparently eight years in the making, but Sunshine Superman happens to open just after the death of Dean Potter, which might color its rainbow feel-good spirit just a tad. Potter was the superstar climber and BASE jumper who fell to earth in May after he illegally leaped off a very high place in Yosemite (another jumper died with him). That event kindled some much-needed discussion about whether BASE jumpers are romantic daredevils or irresponsible adrenaline junkies who endanger themselves and others. Potter is not mentioned in this documentary, but his spirit—whichever side of the argument you fall on—is much in play.