I did the update to WordPress 3.0 and added a new theme for the blog (you’ll have to actually visit the site to see, most of you read through RSS). Most of my motivation was getting something in there that looks better on mobile devices. The theme I have on now does a completely fluid layout instead of fixed width, so it looks a lot better on iPhone/iPad/Android. Also on the list of stuff to try out is the WordPress Mobile Pack that Andrea and James released.
Definitely recommend doing the upgrade and switching around themes. Especially for viewing on iPhone/Android devices. The Mystique theme is what I’m currently using by the way. On the settings page it has a toggle for fixed/fluid layout. Ahh, nice and simple.