Estimation is associated with Fear, Uncertainty and Death marches. Most of us would rather not estimate. Yet, sometimes we do need estimates and commitments, even on "estimation-less" projects. Play a series of estimation games to experience how different techniques deliver very different results. Learn a few simple rules that turn you into a reliable estimator. But correct estimates aren't enough. See what else is required to deliver on your promises. Learn to deal with the destructive games people play with estimates. Estimating can be Fun, embracing Uncertainty and Delivering.