Celebrity Wheel of Fortune — Episode 14: Vanna White, Ken Jennings and Mayim Bialik

You are watching the episode Vanna White, Ken Jennings and Mayim Bialik Contestants go head-to-head for charity in the Ultimate Host Night, with Vanna White calling letters instead of revealing them (for St. Jude Children's Research Hospital) against "Jeopardy!" hosts Ken Jennings (for the Equal Justice Initiative) and Mayim Bialik (for the Mental Wealth Alliance).