I study the cerebellum. Although it comprises approximately 80% of the total number of neurons in the human brain, its importance has been overlooked by many scientists. I have been using a data-driven approach to map the functional organisation of this brain region. I do this by acquiring fMRI data (8 hours per subject) on a battery of 60 task conditions that span cognitive, motor, social, and emotional domains. The ultimate aim of this work is to uncover the "holy-grail" of cerebellar function, in other words, what is the main computation of the "little brain"? Come back in five years and hopefully I will be a bit more enlightened!