Video Gallery: Katy Perry's 'Firework' Is Everywhere

Without a doubt, the ubiquitous song of the moment is Katy Perry's "Firework." We first noticed the trend of putting "Firework" in everything when Team Crushable field tripped to see the Justin Bieber movie last Friday. We were treated to the song in not one, but two trailers -- two in a row, at that. Plus, it's been on Glee (a requirement of any song du jour), and has popped up in weird places like a Victoria's Secret lip synch video. Still don't believe that the song's on its way to total ai...

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