Dreams

I had a dream last night of people that I have not seen in a long time, but still think of very fondly. The question is - have you ever had a dream that was so familiar, that you can't tell (upon waking) whether it was a re-enactment of actual events, or just a figment of your imagination? I think that sometimes our dreams will fulfill needs of lost longing and unresolved conflicts. Or maybe it's just something to fill the hours between awake and awake...