I would disagree with you, Emerald, about the Doors. I know I've heard Break on Through way more often in film, television and on the radio. And when I think of the Doors, that's the song I think of (and while it's almost my favorite, I can safely say it's not, which erases bias; my favorite is Riders on the Storm )

And I think Bob Dylan's signature song would be Like a Rolling Stone. But that's just me.