Tonight Show Mom & Pop Quiz: Grammy Edition; Doc Severinsen sits in with The Roots; Tonight Show Pros & Cons: Doing The Tonight Show in Los Angeles; Jimmy performs as Neil Young (appearance by Neil Young); Ellen DeGeneres gives audience a $100 Visa gift card; Password (Jimmy Fallon & Ellen DeGeneres Vs. Reese Witherspoon & Steve Carell); Neil Young promotes Pono music player; Neil Young performed "Who's Gonna Stand Up?"