Vanna White, Conan O'Brien, Chef Guy Fieri, Gary Woodland

Longtime star of "Wheel of Fortune" Vanna White and her son Nikko discuss the game show and their surprising social media fame; Oscars® host Conan O'Brien; chef Guy Fieri discusses "Tournament of Champions"; golfer Gary Woodland; exclusive interview with journalist and former "GMA" co-anchor Joan Lunden.