The Pluto mission has been scrubbed day before yesterday because of high winds and yesterday because of power problems at the control center.
It has been delayed once today and now it is slated for 13:25 EST (18:25 UTC), or roughly 14 minutes from the moment I write this (unless they postpone again). Better be safe than sorry.
Watch it live at NASA/TV:
http://www.nasa.gov/multimedia/nasatv/index.html[Update] They just announced another delay due to low clouds that interfere with the camera angles. The new time now is set for 19:00 UTC (2:00PM EST)