Check out this video:
Late last night word came out that comet ISON was snuffed out by the sun. Word this morning was that the comet may have survived. You can see it approach in this video and then, it there's a big poof! Watch the top and you see it reappear.
This comet is the most hyped that I can remember. It would be an enormous shame if it just disappeared. I don't know what this means in terms of future visibility but I hope that it's still spectacular.