Separated at Birth?

This priceless post, comparing Republican presidential candidates to classic Buffy villains (h/t Matt Yglesias), made me realize who John McCain keeps reminding me of, physically: It's late-career Charlie Chaplin, strangely enough. Given how poorly Chaplin's last starring role, in A King in New York, went over, I guess it's not a comparison the Senator from my home state will want to own.