Optical and infrared interferometry
  Interferometric techniques are at the forefront of modern astronomical instrumentation. A new generation of instruments are either operating or nearing completion, including arrays of small telescopes as well as the ``big guns'' (VLTI and Keck). A number of space interferometers for the detection of extra-solar planets are also being planned. I review the current state of play and describe the latest developments in the field. 
Timothy R. Bedding (School of Physics, Univ. Sydney)