The only human foods that our cat shows any interest in whatsoever are salmon, and bacon. He has expensive taste with the salmon, because he will creep over to us if we've bought some nice salmon fillet cuts and grilled them for dinner, and try and get up on our laps to see if we will give him any. As for the bacon, we were giving our dog a tiny bit as a treat, and our cat showed interest too...we were surprised because up until that point he only ate dry cat food and never ever showed an interest in our human food at all!
It's funny, because my previous cat that has since passed away would eat ANY human food - you couldn't leave a plate unattended for even a moment without him trying to nibble something off it -- and since some foods aren't good for cats that was a big concern of ours! I guess all cats have their own particular taste with what they like, just like us as humans!!