Tears for Fears
Katy Perry (What? I really wasn't familiar with her stuff before.)
Tegan and Sara
Taking Back Sunday
And that's just the ones I wasn't familiar with before, not the musicians I developed a fresh appreciation for because of fandom, another long list which includes the Rolling Stones and the Bravery.
In other news, my mother claims my childhood obsessions went something like this:
Dinosaurs -> Armadillos -> Cerberus -> Walruses
I have no memory of the armadillos phase. I think she's making it up.