  The composite fermion picture has had a remarkable number of recent successes
both in the description of the fractional quantized Hall states and in the
description on the even denominator Fermi liquid like states. In this review we
give an introductory account of the Chern-Simons fermion theory, focusing on
the description of the even denominator states as unusual Fermi liquids.
Contents include:
  1. Introduction
  2. Introduction to Chern-Simons Fermions
  3. RPA
  4. Landau Fermi Liquid Theory and MRPA
  5. Magnetization and M2RPA
  6. Perturbative Approaches and Trouble in the Infrared
  7. Wavefunction Picture of Composite Fermions and Dipole Approach
  8. Selected Experiments
  9. Last Words
