For the ears, you can ask your vet for an ear cleaning solution, mine is called Epi-Otic, it has salicylic (sp?) acid in which helps to dissolve the wax. Vinnie had one half ear and couldn't hold it down to get a good clean so we had to give her a hand.
As Jane said, a good brush will do his coat wonders. Vin was unable to wash parts of herself in the worst stages of her EC and we had some lovely grooming sessions. Great that he's managing to keep his own bum clean though!