Perhaps someone can explain this to me - why are fuel cells for laptops and cellphones interesting? As I understand, they're not rechargable - they consume fuel and so either need to be refilled or replaced. Given that current laptop and cellphone batteries are rechargable, arn't fuel cells a step backwards for most people and purposes?

Related, I was very displeased the first time my Wii controller's battery pooped out and I needed to run out to the supermarket to get more AAs. It'd be nice if they used rechargable batteries..