Everyone has these projects sooner or later;

PM: 'You have 2 weeks to finish. It HAS to be done by then because they will start using it ASAP!!'
Me: Working day and night to meet the deadline.

After 2 years PM comes by;

PM: remember that program? They're testing it now. They plan to use it in production.

Rghuu*~ (that's me dying a little on the inside)