The Low Frequency Array (LOFAR) is Europe's newest and most sophisticated radio telescope. It is also one of Europe's largest radio telescopes; it consists of a network of small radio telescopes – or 'ears' - spread out across Europe, which are connected together via the internet. When connected together this network forms a European size radio telescope and is the largest on Earth. The UK has just completed its contribution to the European LOFAR project with the construction of the LOFAR Chilbolton telescope (30 minutes North of Southampton). Using this network of telescopes we can 'listen in' on the most explosive and energetic events in the Universe. In this talk we will find out how the LOFAR radio telescope works; how we can use it to study Black Holes and Pulsars; and also what the future holds for radio astronomy.