Sleeping Beauty eh?!

During my lunch time.. i decided to sleep at the breakroom, and as i close my eyes, i cant help but wonder do i really sleep or is it just a state in which my thoughts are jumbled into pictures in my head making me think that i have "dreams".. hmmm.. that made me think.. so i closed my eyes.. and when i woke up i can still remember the last thought that was hanging on my mind so now i'm asking you.. when you go to sleep do you feel like your watching a movie of your thoughts?