Degrees of separation

Ever play the "degrees of separation" game? The one where you figure out how many acquaintances separate you from someone else - usually famous.
One degree would be someone you've actually met and spoken with. Two degrees would be someone they've met, and on and on.
Like, for instance, there are four degrees of separation between me and Adolf Hitler: My German friend Irmi (1 degree) is the daughter of a seamstress (2 degrees) who did personal work for Eva Braun (3 degrees) who, of course, was the eventual wife of Hitler (4 degrees).
So here's what comes to mind at the moment:

George W. Bush (2 degrees)
Tony Blair (3 degrees)
Vladimir Putin (3 degrees)
George H. W. Bush (2 degrees)
Ronald Reagan (2 degrees)
Margaret Thatcher (3 degrees)
Maharishi Mahesh Yogi (1 degree)
The Beatles (2 degrees)
The Rolling Stones (2 degrees)
The Beach Boys (1 degree)
Natalie Cole (1 degree)
Nat King Cole (2 degrees)
Buckminster Fuller (1 degree)
Doreen Tracey (original Mouseketeer)(1 degree)
Walt Disney (2 degrees)
Michael Eisner (2 degrees)
Billy Graham (2 degrees)
Willie Nelson (2 degrees)
Barbara Mandrell (2 degrees)
Clayton Moore (The Lone Ranger) (2 degrees)
Bob Dylan (3 degrees)
Tom Petty (3 degrees)
Roy Orbison (3 degrees)
Donovan (2 degrees)
The Who (3 degrees)
Queen Elizabeth II (3 degrees)
Prince Charles (3 degrees)
Princess Diana (3 degrees)
Weird Al Yankovic (2 degrees)
Hermann Göring (4 degrees)
Heinrich Himmler (4 degrees)
Albert Speer (4 degrees)
Josef Göbbels (4 degrees)
Tom Brokaw (2 degrees)
Jim Davis (creator of Garfield)(1 degree)