1. One of my N64 controllers had a problem at one point. I later found that the batteries in my rumble pack had leaked out. Every time I hit a spot for the rumble to go off, it locked up the controller. Link would walk in a straight line until I reset the system.
I removd
2. One of my brother's GC controllers has a loose analog stick, from him playing it so much. To get any reaction at all, you have to push it all the way in any given direction (to put it into SSBM terms, you need to always attempt smash attacks).