I'm really paranoid about letting my cats eat people food - there are so many things that are fine for people but really toxic for cats. I keep a list next to the refrigerator in case they get into anything (they'll steal food any chance they get).

But, my boy cat Penguis LOVES papaya, either fresh or dried. Julie, his sister, loves vanilla ice cream. One of them stole a waffle the other day - found the remains of it in the living room, and I caught Penguis eating my husband's half-eaten granola bar (which got taken away promptly b/c it had raisins in it, which are toxic to cats).