Several of the bath soaps make good shaving soaps. Zest, Coast, even Dove (although I sometimes have a reaction to Dove). I face lather with them and have no problems with them lasting through the shave. Just build the lather as normal. I think it is kind of fun to experiment around. You find some things would wouldn't normally consider.
Inventor of the world's first safety vibrating Kamisori with night light. Go to http://badgerandblade.com/vb/showthread.php/299465-A-milder-Kamisori: Inventor of the Weckisori - (thanks sychodelix)