My cat Scoopy is very dignified. He'll sit quietly, head up, and wait for his plate to be put down in front of him, while all around him cats are clamoring. Not Scoop. Even if he's the only one eating, his dish must be set down RIGHT in front of him, not a couple of feet away.
Scoop will get my attention at any time of the day by knocking things off the kitchen counter. I'm always careful not to leave anything breakable there, but he has knocked off a variety of things, including a full, open can of beer last weekend. My fault for leaving it there. Scoop just sat there, erect, expectant, as if to say "Now that I've got your attention, feed me."