One way of using a side chain a little more creatively is to use it as an insert instead of a send (so you don't hear the key at all) on an independant kick drum or loop with a rather agressive attack and release to create dynamics in the bass somewhere other than the offbeat. I also llike using side chainging to gate my rides. rhythmtech seems to be a fan too.

EDIT: D'oh, I pasted in the wrong tab!