Running a tegra 2 android honeycomb tab. Definitely not a toy. Holds my entire library of books (only 200ish), couple gigs off movies/music, runs my circuit simulation software, electronics calculators, word processing, packet sniffer, and runs minecraft smoothly (better with ext keyboard and mouse.)
Highly recommended, the two day battery life means I only use my laptop for arduino. So hopefully an android port comes soon (this is being worked on, as avr-dude has already been ported, apparently)