The best evidence? Well the evolution of Cetaceans makes for a fantastic example. Atavism (tendency to revert to an ancestral type) as well. Check out this snake with a leg and you'll see what I mean.
You really believe in a man who has helped to save the world twice, with the power to change his physical appearance? An alien who travels though time and space--in a police box?!?
![[Image: TARDIS.gif]](https://images.weserv.nl/?url=www.smileyvault.com%2Falbums%2Fuserpics%2F11195%2FTARDIS.gif)