Question about smoking bacon rub

Ok, its time to get out the smoker and smoke some bacon.  I have two nice slabs of bacon already brined and ready to head to the smoker.  Before loading the meat into the smoker, I'm contemplating what rub and spices I should add.  Already brined both slabs with a brine that contained some maple flavoring.

So what spices and/or additional flavorings do you add to your's? 

I have used just plain maple sugar before and looking for something new to try.   

Let's hear it...........and Thanks in advance.

Dave