Slashdot linked up this New Scientist article detailing the discovery of evidence which may completely invalidate black holes as astronomical objects:

A controversial alternative to black hole theory has been bolstered by observations of an object in the distant universe, researchers say. If their interpretation is correct, it might mean black holes do not exist and are in fact bizarre and compact balls of plasma called MECOs.

"Controversial" most likely doesn't approach what the physics and astronomy people feel about a claim like this. Still, outrageous claims have overturned cosmological theory more than once, so you never know. Time for the fireworks!