I don't know if I'd call mine trained- it's more like routine oriented. They all come when called. Oliver knows he has to eat separate from the other cats so when I call all the others to their bowls Oliver knows to go to my bedroom and wait for me.

Jimmy gives hugs, I didn't really train him to do that though. He started doing it on his own, but it evolved and now if I stand near him and say "hug" he knows I want one (and he usually gives me one).

I think we trained the cats not to do things (like get on the table or counters) more than we trained them to do things.