With the discovery of neutrino oscillations and neutrino mass, the field of experimental neutrino physics has exploded in recent years. These elusive particles fill the universe but interact only rarely, making it difficult to study their properties. I will talk about three of the most important open questions in neutrino physics: measuring the last parameter that governs neutrino oscillations, understanding the particle/anti-particle nature of neutrinos, and the search for new particles called sterile neutrinos. The quest to understand neutrino mass and its impact on the universe is at the heart of all three questions.