I love how Stallman always manages to sound completely crazy, while being mostly right at the same time. This, of course, gives me more things to shake in front of the face of whomever the next unfortunate soul to suggest C# at me might be.

@W: I know it's not a good solution, but I've found that virtualization can work. Better than dual-booting any way. I used to be tied to Windows for Solidworks, but the newest VirtualBox 3.0 beta manages to make it run, and with OpenGL 2.0 and DirectX 9 acceleration, which is the only way it's even remotely usable. The seamless mode is roughly acceptable as well. Not optimal, but better than dualboot or a second computer. Also I'm told that VMWare Workstation supports a similar functionality.