The purring and meowing at the same time is so adorable - my kitty doesn't do it often, but when he does, I just melt. It's usually when he's happy to see me AND about to get fed. (Since he won't ever stop meowing, he has to "multi-task" ) Another thing he does is meow while licking his lips, and I love those garbled "me-lum-la" sounds he makes!