Would you replace your numeric pad with a trackpad?
jcdreads: I type large numbers of numbers with the numeric keypad, and I absolutely hate having a numeric keypad stuck on the right of my keyboard.  It gets in the way of my mouse, and it makes me move my unnaturally far to the right of my desk in order to center the text keys in front of my monitor.I find that a keypadless Apple keyboard with a separate (moveable!) USB numeric keypad is perfect.If the wireless mighty mouse were illegal, then I'd use a trackpad affixed to the keyboard, but only if it were affixed below the spacebar; never to the right.