Oh Lord......  my old Aussie Nick was a counter-surfer: his specialty was homemade bread cooling on a rack.  I'd push it back against the wall - but he could still get nibbles from the side :-(
Ike was my "saint" - I could have a whole spread of snacks on the coffee table, and he'd never touch anything.  Granted, he'd sit and look at me with his "excuse me" expression - once our eyes locked, he'd look over at a piece of cheese, for example, as if to say "could I please have one of those?"  I mean, when a dog is that polite, how can you say no?? :-)  But one day, during a football game, I must have missed his messages, because he finally got up, walked over to a bowl of Doritos, gently picked ONE CHIP out of the bowl and ate it...LOL!