So cute! My cat Alex gets on top of the doors and hangs his feet off both sides and just lays there. He loves the highest places in the house. He is one of two that go outside, and he gets on top of the house almost everyday and hangs out up there. He is also an orange kitty.
I LOVE big kitties too. I was so happy when Toes got so big (and he's healthy at his weight too).
Neither Toes nor Tail walks across the top of doors, but we had a cat while I was growing up that did that. We also had a couple of cats that would sit on my Dad's shoulder (he's 6'3") while he walked around.