If music were represented by different beverages, Nickelback would be distilled water. It's like pop-rock had a baby with elevator music.
I can listen to their songs and not remember a thing about them 10 minutes later. Not even the song titles. All Nickelback songs merge into one collective entity in my memory tagged simply as "Nickelback".
Friend: "Hey, what song was that on the radio?"
Me: "Nickelback."
Friend: "What was the name of the song, though?"
Me: "Nickelback."
Friend: "That's the name of the band."
Me: "What's your point?"
It's rather amazing. They're like the musical version of Meg from Family Guy.