Rock fans: Are there any pop artists that you have a lot of respect for?

I have tons of respect for Alicia Keys, Christina Aguilera and Gwen Stefani. The first two have astounding voices, much better than the voices of most (if not almost ever) rock singer out there. And because of Gwen's days leading No Doubt, I'll never forget her talent. Plus, she's still awesome. Her current sense of style just proves that she doesn't care what other people think, which is what rock is all about, isn't it? Gwen Stefani is still a rockstar to me. =]