Wow, this is very interesting. I have vivid dreams and go through stages where I have the strangest dreams for months and then nothing for a while then back again. I sometimes have the same dream repeatedly and sometimes with years in between, then it comes back again. Some dreams are very frightening. I always thought it had something to do with my reading, since I read every night of my life before going to sleep... I never thought it was nicotine related, but now I'm wondering.