I used a Sony P (8" widescreen, 1600 x 768, 200ppi) for an hour at the sony store. The screen was amazing. It convinced me to upgrade my MBP (1440x900, 110ppi) to a HDMBP (1920x1200, 150ppi).
I wonder if Sony's CEOs can navigate on the 8" 1600 x 768 screen. It should be a fancy gadget, but I'm guessing it's ridiculously small.