Rivers offers a playful ode, or perhaps manifesto, to slow cinema, to filmmaking set to the inimitable pace of a Costa Rican tree sloth. Alternately a black-and-white observational film and an almost 3D color musical, Now, at Last! allows the viewer to delight in the sloth’s leisurely passage up tree trunks and limbs while contemplating the ways the camera, and 16mm in particular, give sculpturally moving dimensions to even the slowest and, at times, stillest of cratures. – HG