Project disasters

As a new member, I would just like to say how good the site looks and feels.
Too long has the humble planner been cast in the shadows of the project manager!

As a change from the norm how about introducing a forum created for a more light-hearted view of planning where members can share some humorous tales of how their projects have gone awry.

My favourite:

How good is your risk analysis? We didnt see this one coming!
A hugely important project was thrown into disarray after the whole development team resigned en-bloc after being head-hunted by a start-up company, leaving no expertise in that field in the company to complete the project.

or

Many years ago on a military project the project team had a problem with the sensitivity of some fuses. Specifically the anti-disturbance switch wasnt sensitive enough. Weeks were spent trying to correct this. Planning was intense as daily progress reviews were being held to assess the corrective action. Eventually the solution was found and implemented and the Ministry of Defence were invited to see the new design. Everything was going well with the until a train passed the factory about 100 yards away and set all the fuses off.