Our research programs are focused on a basic understanding of complex, unsteady flows with the eventual goal of employing passive and active control techniques to manipulate the flow structure in such a manner that flow-induced vibration, noise generation, mixing, drag and heat transfer are altered. The common experimental approach that extends through our range of efforts is high-image-density particle image velocimetry, along with techniques for characterizing unsteady loading and free-surface distortion. In the following, a brief description of our themes is provided.