So, it's no secret that we here at A to Z aren't the biggest Nickelback fans around. But after stumbling across this video of vocalist Chad Kroeger having fun with the sign language interpreter at Nickelback's August 22 show at the Verizon Wireless Amphitheater, I had to give him credit -- his fascination with her signs for expletives and self-deprecation, and her insistence on following everything he said, is pretty damn funny. Behold: