Today I learned about the Jogcon controller for PS1 & PS2:
This was a dualshock where the analog sticks are replaced by a dial with force feedback, so players could play Ridge Racer and really FEEL the road as if the dial was a steering wheel. I have no clue if it was good (probably not), but I do miss a good weird controller.
My wife had a PS2 version of this with Final Fantasy 11 and the hard drive/modem attachment. I had never seen one before. It was pretty cool.
The Dreamcast had a keyboard for Typing of the Dead, but iirc they also had one similar to the pic I posted for Phantasy Star online.