Watch Gwen Stefani’s Trippy New Video for ‘Spark the Fire’

Gwen Stefani's following up her latest single 'Baby Don't Lie' with the 'Hollaback Girl'-reminiscent 'Spark the Fire', produced by her buddy and Voice co-mentor Pharrell Williams.  The video definitely seems a throwback to her Harajuku Girl days.  It's visually trippy, and I can't decide if I'm more mesmerized by Gwen or Pharrell's floating heads or the pizza scanning machine, lol.