In assessing the impact of ISO on our knowledge of the continuum emission from galaxies, the most exciting developments to date have touched the mid-infrared, as might be expected from ISO's substantial gains in sensitivity and spatial resolution at those wavelengths. Gains at the longer wavelengths are more subtle.
First, the various surveys conducted by ISO are reviewed, then new results in the mid-infrared spectral range are described, in the areas of spectro-photometry and broad-band colors, and implications for the overall spectral energy distribution are mentioned. Finally, spatially resolved studies of galaxies at wavelengths available to ISO are presented.