Actor Michael Keaton; The Flaming Lips perform.

A Bar fight story is put to the test; a historical mystery involving ballistic material is probed.

President Obama blows off the Boy Scouts, and Elon Musk discusses the future of electric cars.

Tonight's guests are actress Carrie Fisher and actor Ron Livingston.

The contestants prepare lunch for the movers and shakers at one of the city's most famous restaurants.