I got a large jade plant from my dentist, who didn't want it anymore. It was the most overgrown, flopped-over plant I have ever seen. I brought it home and butchered almost every pathetic branch off of it. Wasn't long before it had new leaves and was looking great.
If you are thinking of repotting, do NOT do it now. Someone that worked at a huge garden center told me not to do it till spring because they have very shallow root systems and repotting in the fall would probably kill it with the shock and watering.
I have not repotted mine at all.
