September 3, 2015 4:40 am ‘Tonight Show': Justin Bieber, Questlove Drum-Off Justin Bieber and The Root’s Questlove have a rematch of their 2010 “Late Night with Jimmy Fallon” drum battle on “The Tonight Show.” Local 1:36 O.J. Simpson's cause of death revealed 2:36 Super dad makes Mario-themed obstacle course for son's birthday 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business' 0:59 Paramedic involved in Elijah McClain's death sentenced to 4 years of probation