I once said, comparing Mookie (dog) to my cats, that they were well-behaved-bottom-of-the-bed sleepers. And they are...in the summer. Winter sleeping arrangements are a bit different.
Queen size bed. Laying on my right side, right arm tucked under pillow, left arm stretched out in front of me. Snuggled alongside said left arm is the biggest cat, Oscar, furry cat butt in my face. He gets extra bonus points for his tail either being in my mouth or right up under my nose. From time to time, because I'm not petting him in my sleep, he will endeavor to take a piece of flesh from my left thumb, purring all the while.
Meanwhile behind me, Finn is kneading the pillow as if it were an Olympic sport and he's looking for a gold medal. Occasionally my scalp will get in his way, but no worries, he's not deterred by blood. If scalping fails to illicit a reaction, he'll climb over the top of the pillow and pat my [hopefully] closed eye. Usually his claws are contained when he does this. If that fails, he will stick his wet little nose on my mouth. Having gotten the desired response, which is apparently me bellowing swear words and swatting at him, he moves down and lays his solid brick like body behind my knees.
His co-conspirator, Lillie, is in front of my knees, now I am effectively pinned beneath the blankets so that I have to pull my legs straight up (no small feat) and outside of the covers if I want to turn over.
And that is how you sleep (or not) with cats.
Watch some funny cat related animation here : Simon's Cat