Estimate Goat

Estimate Goat will give you estimates with the same amount of thought that often goes into project / design / requirement conception (i.e. very little, and somewhat random).

** Note: Estimate Goat is not intended for real use, this is purely for entertainment purposes to keep you occupied during boring iteration kick-offs and project scoping meetings.

Whilst this was intended for agile / lean / scrum / xp software projects, similar concepts apply to other development methodologies.

http://www.theestimategoat.com