Is there a decent desktop keyboard that has a mouse scroll ball in it? I find it extremely annoying moving from the keyboard to the mouse and back and my current mouse is giving me RSI.
I want a desktop keyboard like this:
Ideally I would like the J key to be the scroll ball (when in "scroll mode") but I'm happy to settle for a scroll ball I guess.
It's unclear whether you want that keyboard you posted a picture of, but if you do, Lenovo actually does still sell a version of it:
The tradeoff is that it does have the short-travel ThinkPad notebook style keys as opposed to full desktop keyboard style keys, so it depends on whether you like that feel or not. I personally prefer full travel "clicky" keys, so I would agree with Kyle's answer that the Unicomp products are probably the best option in that case. (Their EnduraPro is the closest thing I've found to the ThinkPad model with "real" keys.)
Jonathan, Unicomp (who owns the old IBM Model M keyboard patents) makes a nice keyboard with an integrated trackball. I think there's a few variants if you prefer a slightly different keyboard layout.
If you're looking for a replacement mouse, I am a huge fan of my Evoulent VerticalMouse3. I have bad RSI injuries in my right wrist (to the point where I can't use a standard mouse for more than a few minutes). I can actually work with the VerticalMouse!
AutoHotKey - Map something like Win-J to the scroll action.
Edit: Umm n/m, try that wierd chinese key and J.
