  A study of the host stars to exoplanets is important to understanding their
environment. To that end, we report new speckle observations of a sample of
exoplanet host primaries. The bright exoplanet host HD 8673 (= HIP 6702) is
revealed to have a companion, although at this time we cannot definitively
establish the companion as physical or optical. The observing lists for planet
searches and for these observations have for the most part been pre-screened
for known duplicity, so the detected binary fraction is lower than what would
otherwise be expected. Therefore, a large number of double stars were observed
contemporaneously for verification and quality control purposes, to ensure the
lack of detection of companions for exoplanet hosts was valid. In these
additional observations, ten pairs are resolved for the first time and sixty
pairs are confirmed. These observations were obtained with the USNO speckle
camera on the NOAO 4m telescopes at both KPNO and CTIO from 2001 to 2010.
