Big Data is on every CIO’s mind. It is presently synonymous with open source technologies like Hadoop, and the ‘NoSQL’ class of databases. Another technology that is shaking things up in Big Data is R (www.r-project.org, #rstats). R is an open source programming language and software environment designed for statistical computing and visualisation. The statistical software R is the fastest growing analytics platform in the world, and is established in both academia and companies for robustness, reliability and accuracy. For real big data analyses you have to access your data in your preferred database on the fly. In this talk I will give a short overview about R, the available connection to MongoDB and present some big data analyses using R and mongoDB.