Dh sells these at his work. I think its a great idea, not sure that I will be getting one though. Then again, I could do with a new gadget in the kitchen as my bread maker and George Foreman grill have now been living in the cupboard for the past couple of years.
I saw one on TV tonight, they do look good. Even if it takes 30 seconds to fill the cup up, its still faster than my kettle.