'X Factor' Crowns Alex and Sierra
One Direction, Lea Michele and more perform in two-hour show
Jeff Gutt Goes for Broke on 'The X Factor'
Aging rocker challenges Alex and Sierra in final performances
Carlito Slips Into 'The X Factor' Finale
Latin singer surprisingly makes it into the finale
Alex and Sierra Elevate 'X Factor'
Kelly Rowland breaks down in tears while talking to Jeff Gutt
Demi Lovato's 'X Factor' Team Is Done
Watch contestants Rion Paige and Ellona Santiago get the boot
Alex and Sierra Steal Show on 'X Factor'
Tearful top six makes Demi Lovato cry ahead of double elimination
Lillie and Josh Get Cut on 'X Factor'
Viewer votes save Rion Paige after judges' deadlock
British Invasion Targets 'X Factor'
Lillie McCloud and Alex and Sierra are the lone standouts
'X Factor' Cuts Potter, Sweet Suspense
Selena Gomez, Fifth Harmony perform on surprising results show
'X Factor' Sends Carlos Guevara Home
Top 12 unsuccessfully tackle Eighties hits amid low ratings
'X Factor' Hopefuls Get Do-Over
Contestants had 24 hours to prepare for a do-over round
Paulina Makes Surprise Move on 'X Factor'
Voting glitch means do-over round tonight instead of eliminations
Demi Tosses Frontrunner on 'X Factor'
Judges make questionable cuts during haphazard live show
Simon Picks Last Four Groups on 'X Factor'
Team standouts Alex and Sierra do cutesy version of 'Grease' song
Paulina Booed for 'Mistake' on 'X Factor'
Judge makes questionable choices during Four Chair Challenge