This document provides a summary of the the LLNL Workshop on Extreme States of Materials: Warm Dense Matter to NIF which was held on 20, 21, and 22 February 2002 at the Wente Conference Center in Livermore, CA. The warm dense matter regime, the transitional phase space region between cold material and hot plasma, is presently poorly understood. The drive to understand the nature of matter in this regime is sparking scientific activity worldwide. In addition to pure scientific interest, finite temperature dense matter occurs in the regimes of interest to the SSMP (Stockpile Stewardship Materials Program). So that obtaining a better understanding of WDM is important to performing effective experiments at, e.g., NIF, a primary mission of LLNL. 50 µm Cu cube 100 fs Laser ΔL ~ 100-1000 µm 2x10 11 5 MeV protons in a 3 ps pulse.