BLOOD SAMPLE: Just in time for Halloween, our old friend, comedian-turned-actor Richard Belzer, who plays Detective John Munch on Law & Order: SVU, has co-written and stars in a new music video, “The Vampire Song,” a collaboration with composer Joe Delia. Belzer plays a one-fanged Shaft-like vampire who croons the refrain: “The vampire, he loves the ladies!” Anyone who remembers Belzer’s legendary imitation of Mick Jagger’s chicken walk should appreciate this. Ooooh. Scary!! Thanks to manager Eric Gardner for the link. (10/1p)