There's no doubt about it, No Doubt are back in a big way. On Thursday night  -- and less than a week after making their first performance on live TV in too long to remember -- the band busted on to the stage of 'Late Night With Jimmy Fallon' and pulled out 'Settle Down,' the first single from 'Push and Pull.'

That album, which drops Sept. 25, is their first in 11 years and has been already supported by a slew of promotional gigs, including the aforementioned live TV gig last Sunday night at the 2012 Teen Choice Awards.