I was lucky enough to be invited to talk about the new Groovy Calculation in PBCS and ePBCS at the Ohio Valley OAUG meeting today. If you have read the Groovy series, you know how strongly I feel about the advancements in Hyperion Planning with the addition of Groovy Calculations. I want to share the presentation with a wider audience. This is a functional overview for those who are new to the concepts. This also introduces readers how to develop their first Groovy Calculation, and provides some examples.