A new paper in Physical Review Letters comes out swinging on the "con" side of the debate (h/t: Physics Buzz).
Proponents of the existence of naked singularities include Ted Jacobson and Thomas Sotiriou, two physicists at the University of Maryland, College Park. They published an intriguing paper last October speculating that under just the right circumstances, a naked singularity could occur.
The key is that pesky event horizon: all we need to do, the physicists said, is destroy it, or at least temporarily overcome it - say, by sending a rapidly spinning object on a collision course with a black hole, with the object spinning in the same direction as the black hole. That combined momentum might be sufficient to overcome the gravitational power of the event horizon. And voila! We could finally get a peek inside a black hole.
Chief among the naysayers is Stephen Hawking, who famously made a bet with two Caltech physicists, Kip Thorne and John Preskill, in 1991 that naked singularities could not exist, although the stakes weren't especially high: 100 pounds sterling, plus an article of clothing "embroidered with a suitable concessionary message."