I have three cats and two of them are not very big on people food but one of them is like a little garbage can for anything and everything he can get his little paws on. He especially loves bread, if we leave bread on the counter overnight he will rip through the packaging and eat whatever he can. He also loves yogurt and ice cream, and will go crazy for anything with sugar (although I don't give him sugar very often, and only in very small quantities).
Be careful though because some human foods are particularly dangerous for cats. The following link is great and will give you some foods to watch out for: http://pets.webmd.com/cats/ss/slideshow-...-never-eat