Tusk (Blu-ray)

A podcaster (Justin Long) travels to Canada to interview a eccentric retired sailor (Michael Parks) and finds himself the subject of the old man's obsessive quest to surgically transform a human being into a walrus. Kevin Smith's deranged, singularly unpleasant horror film — which Smith famously conceived via a Twitter poll — is simultaneously a genuine body-horror provocation and a gleefully transgressive exercise in bad taste, anchored by an extraordinary performance from Michael Parks. Blu-ray presentation.