I have been a long time fan of the IBM M-Series spring type (click-clack) keyboards and have two in my possession. I also like using the mouse "nipple" trackpoints as I dont have to take my fingers off of the keyboard.
Well, I recently discovered that a company called Unicomp makes a spring keyboard along with a built-in trackpoint! I'd love to use this in the office, however, I am concerned about the noise it may create. Plus, I'm not quite sure where the mouse buttons are on this.