Fuzzy used to accept ear scratches more readily, but these days he has to be in a particular mood to allow them when he's in the cage. If you're holding him, it's another story, and he always wants them. But in the cage he will usually walk away these days. But once in a while he will sit and enjoy.
Except the one time Potato walked in while Fuzzy was getting scratched. As soon as he noticed Potato he called an end to it.