What's the Kennection? #258

The chemical element with the longest name, element 104, honors what physicist who discovered the atomic nucleus?

Since 1998, what actress has been married to Rob Tapert, the co-creator of her TV hit Xena: Warrior Princess?

Who appeared with Tenzing Norgay on the cover of the July 13, 1953 cover of Life magazine?

What singer-songwriter was inspired by a photo of third baseman George Brett when she wrote her breakout hit "Royals" in 2012?

Accepting his Best Picture Oscar in 2003, what director thanked the academy for seeing past "the trolls and the wizards and the hobbits"?

What's the "Kennection"?