Hey folks, I appreciate all the positive comments - thanks!

What type of "mouse matt" did you use to get a good grip. Most mouse mats I've seen/used didn't have a "grippy" surface.
LBD - as a software developer, I've accumulated (and tossed) many mouse pads over the years.  I don't know for certain, but I think this one was an old Apple one.  The bottom had a very textured rubber surface.  It seems to be pretty grippy.