I sleepwalked once, I ended up on the bottom of the basement stairs looking like golem... :P If I hadn't woken up at 5 am though, I probably would have given my brother a heart attack.
I also sleeptalk, my brother has an interesting story from my early childhood when in the middle of the night I mumbled "mommy, daddy..." and then shouted "PIKMIN!!!!!" That was back when it was a new game and would be released soon. I guess I was a little exited :P