Craig, yes he did play with Lisa on the Simpsons. At least once, the episode that comes to mind is the anual snake womp, or stomp or whatever it was. Lisa gets him to come and sing as his bassy voice will attract the snakes which come running to hide from being stomped in the Simpsons house.
There may have been more /ubbthreads/images/graemlins/smile.gif But I don't feel like searching the episode guide this morning...