What's the Kennection? #115

What A-list actress, born in Israel, starred on Broadway in a 1997 revival of The Diary of Anne Frank?

What Greek philosopher is credited with the theorem relating the lengths of the sides of a right triangle?

For his 50th birthday in 1939, who received a mountain getaway called the "Eagle's Nest"?

What pop legend tried his hand at classical music with 1991's Liverpool Oratorio?

Whose birthday, October 2, is celebrated by the United Nations as the "International Day of Non-Violence"?

What's the "Kennection"?