Good Example of Keyboard Support for Motion Impaired Users
Few interactive modules appear to incorporate support for motion impaired users, but I found one from the British Museum that does (at least in part). One of their educational modules is a virtual recreation of an Ancient Greek theater.
It's similar to a Quicktime VR in that you can rotate left or right to see different views of the theater. You can do it with the mouse, but the site also announces you can use the left arrow or the right arrow keys. It's not perfect though, you can't "touch" objects without the mouse (even showing a cursor that you could move around with keys might help).
I'm sure you could find other areas to improve accessibility, but it's nice to see that they were thinking about it, especially in a Flash module.