Film Reviews: Though the easy-target subject has already been amply satirized, "Public Domain" scores points taking aim at the cruelty and voyeurism so key to reality TV. Canadian black comedy centers on unwitting stars of a hidden-camera show that aims simply to expose how pathetic and/or morally bankrupt human life can get. Vid-shot feature debut for writer-helmer Kris Lefcoe resourcefully milks a small budget, but is still best suited to small-screen sales after fest travel.