I've been in Seattle all week at a technical conference and have been largely living on Windows Mobile devices ... I have a QTek 8500 Smartphone (which is really nice and small Smartphone), a Palm Treo 750 (a Pocket PC with a smaller screen and built in thumboard) and an Orange SPV M3100 (larger PPC with slide out keyboard, Wifi etc). I've also been using Windows Mobile 6 (aka Crossbow) on a couple of other devices for ages... and have gotten really used to some of its new functionality regarding the way e-mail, calendar etc is handled when running against an Exchange 2007 server.
Jason (who was yesterday presenting to a room of 500 screaming and yelling people whilst - I kid you not - dressed as a pirate) has posted on his Mr Mobile! blog with a great summary of what's new in Windows Mobile 6...
... now I can't wait to see it hit the streets on some of the exciting devices that are out now or will be coming soon!