Do You Know Why You Dream?

It amazes me when I remember my dreams from the night before.  Sometimes they feel so real – like when I wake up I feel that whatever happened in my dream really occurred.  Of course now that I am writing about dreams, I can’t really remember any poignant ones.  BUT, when I was little I used to always have the same weird dreams.  Ever fall asleep watching a TV show and then the characters from the show or the plot turn up in your dream?