Today we saw a electric roller skates, Venn diagram of Playstation 3 models, a multi-track audio editor for Windows Mobile PDAs, handy little depth of field calculators (which I was then told are as old as the hills), a new version of the dead-in-the-water PocketSurfer2, a new sleep-tracking watch with REM cycle history software, perhaps the most badass motorcycle in recent memory, a new cheapish Wacom Cintiq tablet screen, a self-adjusting wrench, Japanese manhole covers (and I don’t mean Hard Gay’s tailor), the just-high-enough-tech EpiSurveyor project, a strange clock that tells time with only noise, a watch with a barometer and more, a plug-in Prius, cameras that are starting to come with ample embedded memory, a spy mirror clock, and Gmail .