Justin Bieber "sings" Crazy Train on Lip Sync Battle

Justin Bieber Nails Ozzy Osbourne's "Crazy Train" Lip Sync Battle

Lip Sync Battle - Justin Bieber Performs Big Girls Don't Cry (Spike)

Lip Sync Battle Preview - Skylar Astin Rocks 'Where Are Ü Now' by Skrillex & Diplo + Justin Bieber

Nina Agdal Performs Missy Elliot's 'Lose Control'

Is This The End of Justin Bieber?

Lip Sync Battle: Jason Derulo vs. Katharine McPhee (Preshow)

Lip Sync Battle - Theresa Caputo

Lip Sync Battle with Lena Dunham

Lip Sync Battle: Deion Sanders on his Lip Sync Win

Justin Bieber Throws Tantrum

Lip Sync Battle - Sarah Hyland performs "Don't Cha" by The Pussycat Dolls

OMG - Anne Hathaway Rides Wrecking Ball

Jimmy Fallon - Lip Sync Battle with Seth Rogen

Lip Sync Battle - Craig Ferguson performs ABBA's "Take a Chance on Me"

Lip Sync Battle - Deion Sander's Play That Funky Music vs. Justin Bieber's Big Girls Don't Cry