I can act out in my sleep, although most of the time I stay still. Last night I decided to sleep on my couch, not often do I do that- even though my couch is AWESOME. Its pretty deep, if you take off the cushions, not that I did that either. I just piled any extra toss pillows on the back of the couch.
Sometime in the night, I dreampt that I was sleeping on my couch and my dog was sleeping on the back of the couch (not that I have one). I reached up and scratched the furry pooch under the chin. In my dream and in reality, I moved my hand up and gave a good scratch. In my dream, it was to the dog under his chin. In reality, I gave the fringy toss pillow above me a good scratch on its 'chin'- which was the corner of the pillow. I woke to that and laughed. How could I not? Let me report, it is really bizarre to 'scratch a pillow under its chin'.
unless of course, I had (e:twisted) 's 'pooch/pillow'- :) then it would totally be reasonable !!

I admit that is kinda odd and kinda scary. I hope that once off of what ever you are sleeping on it wakes you up. I would hate to think about if you had a dream you had to cook dinner but where sleeping on the couch.