Sometimes different people share the same face. I can't explain it, you can't explain it, that's just the way it is.
The following pairs of people share a common face.
First, an obvious one:
Natalie Portman and Keira Knightly
This one is so obvious it's like putting Sarah Jessica Parker on my list of ugly people who everyone insists are good-looking (somewhere way down there).
Another obvious one: Jimmy Fallon and Chris Kattan
Orlando Bloom and Tarek from The Apprentice
Lawrence Fishburne and Mo Vaughn
George and Laura Bush
Allen Iverson and the Olsen Twins
Ryan from The OC and Mr. Magoo
Liv Tyler and an Allergic Person