For these kinds of stories to work, the original story has to be fairly well-known, so the audience can notice when the events of the original are shown, but with the shift in point-of-view. One of the most famous recent examples of this kind of meta-story is the book Wicked (and its sequels), and its subsequent Broadway adaptation. It gives us The Wizard of Oz, from one possible viewpoint of the Wicked Witch of the West, whose name is revealed to be Elphaba. So there's our 'E'!
I haven't read the books, so my only acquaintance with this character comes via the show, which I saw last year and blogged about here. Wicked, the show, takes sufficient liberties with the characters and the original story that I can't honestly say that I'll be thinking of that tale lurking in the corners next time I watch The Wizard of Oz. But as a meta-story, it's a lot of fun, and in providing a sympathetic Elphaba, we get a good illustration that we're all the heroes of our own stories. The really memorable villains aren't always the ones who act the most evil, but rather the ones who are genuinely committed to their own causes and who really believe themselves to be on the side of the righteous.
Here's Elphaba and Glinda in the big Act One showstopper, "Defying Gravity" (embedding disabled). Elphaba is played by Idina Menzel, and Glinda by Kristen Chenoweth. (Menzel had apparently suffered an asthma attack minutes before going onstage to do this, which is why her breathing in this performance is so pronounced.)
Trivia: Elphaba's name came about by sounding out L. Frank Baum's initials.