There's no denying that the Xenomorph queen is terrifying in Aliens, but she doesn't seem quite has bad when her lifeless head is just sitting on a table in its earliest form, not quite sculpted into the horrifying finished product. She's still no looker, though.

Stan Winston School brings us yet another fantastic behind-the-scenes look at the mesmerizing world of practical effects, and while this head-model isn't quite as insane as a fully functional spinosaurus robot or anything, it's still fascinating to see. But if we're talking real life, I might have to opt for the dinosaurs. [Stan Winston School]