The Nintendo 64 controller's Control Stick seems to have paved the way for the analog sticks adopted by all major game consoles ever since. You can tell, too, because it really rather sucked compared to the others.
It wore out quickly, acquiring a large zone* where it could wiggle freely, usually within the stick's unresponsive dead zone, but occasionally exceeding it and causing undesired input. There was also that white residue that built up in the well it stuck out of, which I never could figure out whether was scrapings from the stick itself, or some kind of lubricant escaping to the surface of the mechanism.
It's obviously visibly different from most other analog sticks; the stick itself descended all the way down into the mechanism, while most others that came after had a small nub attached to a larger rotating sphere.
So if there's anyone out there familiar with controller design, tell me: What was it, mechanically speaking, that Nintendo didn't do quite right the first time? What all goes on down there inside analog sticks?
* EDIT: I originally conflated the dead zone, where the stick doesn't respond to movement, with the "wiggle zone", where the stick moved freely after wear and tear. I've now fixed it above.