Cats want humans to leave them alone until they really, really want humans to pay attention to them, at which point they pull out all stops to make sure all human eyes are on them.
Some cats use the power of the meow to get attention, others knock stuff off shelves and counters to ensure they're not ignored, like furry little Nihilists.
But Nala the Norwegian Forest cat (previously at Neatorama) has a cuter method of calling her humans- she jumps at the door and peeks at them through the window until they come out and play.
How could anyone ignore the call of the wild Nala?
-Via Laughing Squid