I have not always been a big fan of stacking pedals. In my past experience when I would stack them I would often lose dynamics in my playing, or I would get an increase in compression. That being said, I recently tried a clean boost (an "IT" pedal by Schroeder Audio) in front of a Honey Bee. What a great result! The boost simply added a nice boost to an already great, warm overdrive. The "IT" is quite transparent, so it seems to work well with others without over compressing, or coloring the sound.
Stacking CAN work....This could get dangerous!