The International Electron Paramagnetic Resonance (Electron Spin Resonance) Society has announced Brian Hoffman as a 2015 Fellow. The Hoffman research group at Northwestern University studies electron transfer and resonance in proteins and metalloenzymes using a combination of nuclear magnetic resonance (NMR) and electron spin resonance (ESR) techniques. This interdisciplinary approach to understanding the fundamental processes through which protein-protein interactions occur has made significant strides in the field, evidenced by a robust publication record and over two decades of research funding from the Division of Molecular and Cellular Biosciences. Congratulations, Dr. Brian Hoffman!