It would be kind of interesting to know what he did while he was a Pokemon though.
I'm mean it's not like you normaly want to know what Ash is doing inbetween episodes. Who wants to the see the exciting chronalces of Ash bathing, changing his underwear (as per his mother's request), taking a nap and eating Brock's overcooked food? But somehow I think being turned into a Pikachu might just change all that. There'd be opportunities for comedy, irony and awkward antics the likes of which Pokemon has never seen. I'm suprized the writers just passed it up.