Sometimes, doing administration pays off.
I had learned from our computer support person that some faculty in my department have both desktops and laptops -- this is not something that's widely known, since there isn't funding for everyone to have two machines. But there is more funding available for computers now than there used to be -- my first PC at the U I had to use for six years, which meant it was pretty well outdated by the time it was replaced. Nowadays we are on a better upgrade schedule, and apparnetly there's enough extra room in the budget to help out some people with special requests.
So I waited until my Chair was feeling indebted to me for some crap administrivia I was taking on -- and then I sent him my request for a laptop, pointing out all the many ways I would use it in the classroom as well as for my research. (I've been stuck using a loaner machine whenever I want to make presentations in class, which is a royal pain).
He approved my request, and then I had to wait for the purchase approval, the UPS screwup, and the installation & setup by our support folks. And today I finally got my new machine!
So I'm blogging from the couch right now, fully enjoying the benefits of our home wireless network. I still have to do a lot to get this machine set up the way I want it, plus copy my bookmarks etc from my desktop(s). But it's going to definitely improve my research, my teaching, and maybe even my blogging!