Rocker delivers "Love Is the Truth" and "You've Got Her in Your Pocket," trash-talks Jimmy Fallon's guitar
Grammy-winning singer flipped hair over her head for the full Sia experience
"Commander-in-Preach" surveyed eight years of accomplishments during hilarious installment of "Slow Jam the News"
That can only mean one thing — pure entertainment
Rocker unleashes eternally raspy howl during performance of 'Another Country' cut
‘Tonight Show’ host takes on David Bowie, Michael McDonald in new round of ‘Musical Impressions’
Dynamic duo offer a comprehensive greatest hits primer with a rousing song and dance routine
The 'Storytone' rocker also plays "Who's Gonna Stand Up?" with the Roots
