Watch Full Movie Online. Slacklining to many is a mystery, a line where impossible and possible collide. For Terry Acomb it's simply a way of life. This Fruita based geologist has pioneered the sport in North America and is doing everything it takes to spread the passion nation wide. "Slacker" takes you inside Terry's life uncovering his fundamental role in the slackline community and the work he's put into the progression and accessibility of this sport.