Having difficulty with my arms and wrists led me to one of Microsoft’s split keyboard and trackball. (When I was younger, I was an early adopter. But back then I had fewer bills…) You never realize how much a regular keyboard and mouse do a number on your hands and arms until you make a switch. I’ve been very happy with both.
Which leads me to a pet peeve: Linux evangelists who use Windows. Now I realize this isn’t everyone, but there is as much FUD on the Linux side as there is on the Windows side. I spend the vast majority of my time in a Windows (W2K) environment, and while it does have difficulties with uptime, and other issues, I don’t think I’ve ever needed to do a hard reset. On the other hand, I’ve had Linux installations go bad. No doubt, the latter is my own fault, a lack of adequate backing up and changing things I shouldn’t have changed. But it’s not as clean as “Windows sux and Linux rulez.” And I think most people who are heavy users of Linux would agree that there are some things for which Windows is more convenient.
What really gets my goat is those who have very little idea of what Linux is, and who use Windows daily, who then claim to be open source advocates. Advocating means not requiring your students to hand in materials in MS Word format or demo SPSS/Windows in front of a class (when many of our “smart classrooms” sport a Solaris machine as well).