Polyphemus, by Michael Shea

 Polyphemus is a collection of horror-tending to sf, or sf tending to horror stories, with one Nifft the Lean tale thrown in. I wasn't a fan of the title story, but the rest are good, with the standouts being "Uncle Tuggs" and "Horror on the #33". For the popcorn value, "The Extra" isn't bad. A nasty dystopian tale where being an extra means being tossed into an 'alien invasion' movie shoot where the robotic aliens are programmed to hunt and kill you all across the backlot, while robot cars and planes smash into each other.