What's the Kennection? #163

What modern invention was still called "Hertzian waves" when Guglielmo Marconi began experimenting with it?

Michael Jackson's third son is now known as Bigi, because his classmates made fun of what name he once went by?

On what 2007 megahit does Jay-Z call Rihanna "Little Ms. Sunshine"?

The "Searching" and "Windsurfing" TV ads of the 2004 campaign accused John Kerry of what indecisive practice?

What Pacific atoll is still contaminated with cesium-137 from the 23 nuclear tests the U.S. performed there?

What's the "Kennection"?