What's the Problem?

Seriously, what's so outrageous about Beyonce's "Sasha Fierce" side that it has to be cordoned off on its own EP-length disc? (At least buyers aren't paying two-disc prices for the album). And what does it say about her that she feels like a dance club side is such a radical thing that it constitutes a second identity that requires its own name? I'd say it sounds like she's gone Hollywood, but she's always been Hollywood. More likely, it sounds like someone who's forgotten what first made her interesting ("Bootylicious").