Glee did a pretty good job...Gaga and her team are in control of her craft, on top of her having a versatile voice, she will be relevant as long as she wants...I feel like Christina is still finding herself, and she attempts to rely on Gimmicks as well, her entire career has "eras" she was a pop princess like Britney, then she was a whore, then she was a "old school singer", now shes futuristic/Different like Gaga (though Gaga wasn't the first to do it and wont be the last she brought being eccentric back into mainstream musics eye)...but either way this Christina Gaga stuff is going to continue until the electronica dance sound becomes irrelevant again (as far as mainstream is concerned)