Of course, a cat's favorite trick is staring hungrily at some treat that you, the human, really savor and don't wish to part with, guilt-tripping you into "sharing" -- i.e., putting some of it into the kitty's dish -- by plaintively meowing and rubbing against your leg, only to turn up his/her nose at it once you've made the sacrifice.
(I've learned not to share fresh salmon, prime rib, or any other such delicacy with Grisabella, because she -- for reasons I'll never understand -- really prefers dry cat food and is very finicky about actually eating anything else.)
LOL
Cat lovers, you may enjoy this home video (not mine) from YouTube: feline vocalizations