Nickelback: Daniel Adair, Chad Kroeger, Mike Kroeger and Ryan Peake. Source: Getty Images OPINION: While touring the UK in 2003, Nickelback’s Chad Kroeger was one angry dude. When an audience member gave the Canadian band a middle-fingered salute, he reportedly responded by trying to have security throw out the concertgoer. On the same tour, a British journalist managed to cross the then-poodle-haired singer during an interview — Kroeger publicly challenged the hack to a boxing match. That combative temperament, coupled [...]