Infrared Properties of Nearby Interacting Galaxies: from Spirals to   ULIRGs
  I present a brief review of some of the mid-infrared properties of interacting galaxies as these were revealed using observations from the Infrared Space Observatory and Spitzer Space Telescope over the last decade. The variation of the infrared spectral energy distribution in interacting galaxies can be used as an extinction free tracer not only of the location of the star formation activity but also of the physical mechanism dominating their energy production. 
V. Charmandaris (Univ. of Crete, Greece)