The first sentence is from The Maltese Falcon:
"Samual Spade's jaw was long and bony, his chin a jutting v under the more flexible v of his mouth. His nostrils curved back to make another, smaller v. His yellow-grey eyes were horizontal. The v motif was picked up again by thickish brows rising outward from twin creases above a hooked nose, and his pale brown hair grew down - from high flat temples-in a point on his forehead. He looked rather pleasantly like a blond satan."
I love that sentence - it's all description but the punch line makes it so emotive. After that description you know this guy could be nasty.
My own sentence below is from a short story I am currently working on and hope to offer to a webzine.
It's a very dark piece by my standards.
"Of Course he knew that killing and then consuming one's wife was frowned upon in polite society; indeed in the eyes of the law it was positively forbidden and could bring grave consequences. But all the same, he thought of maybe adding a little seasoning, as he chomped down on another finger."