Don't ask me why but I listened to your podcast last night. I tried to follow it as you were talking, by googling the phones you were talking about, it was a good podcast.
But the best thing was: the following day (earlier today) I had to sit a 3 hour paper on Product Design for my A-Levels. Guess what came up!? Design improvements to mobile phones and PDAs!
Thanks PCA, I owe you one :)