I am not a fan of Avril Lavigne. At least, I wasn't until five years ago. Her early stuff was a little too emo for me.
With Girlfriend, Avril did 3 things. First, she found her inner rock goddess. The song simply rocks. Second - this one is going to be very hard to understand for any of you that aren't either Canadian or old fans of You Can't Do That On Television - she sounds more Canadian than she had previously. It's her tone and her vernacular.
Finally, she recorded the song in at least eight different languages. Here is the English version.
The results? The biggest hit of her career to date. No coincidence. Not at all.
For those who are so inclined, here is a video that gives you a sampling of several of the languages in which this was recorded.