I'm wondering if anyone else experienced anything similar to this:
I quit smoking for about 7 years.  I had tried cutting back, cold turkey, the gum, lozenge, Wellbutrin... all failed.  Except the patch.  The patch worked.  And then like a fool I said I'll "just smoke for the weekend" while camping one summer, and went back to cigs.  Anyway.  I digress.
When quitting with the patch, I took it off before bed.  It gave me weird dreams, which was sometimes fun and other times completely unpleasant, like the dream in which my cat got hit by a car and all I could do was stand there and watch.  No lie, I woke up thinking he was dead.  So no patches at night after that.
When I put my patch on in the morning, I would get a cig like buzz from it.
Now, keep in mind, I was a heavy smoker.  A pack a day, sometimes slightly more if I was driving, drinking (not at the same time, of course), or stressed out.  I should have been used to nicotine enough that I wouldn't get a buzz.  But about 15 minutes after I put my patch on, sure enough.  It only happened with the highest strength patch and never with the lower ones, but still.
That had to be nicotine, because I wasn't smoking anything to take in CO2.  
Just something I'm throwing out there.