Discrete-Line Spectroscopy in Superdeformed Nuclei

The discrete-line spectroscopy of collective structures in nuclei having superdeformed shapes has progressed rapidly over the past three years, and we are now in a position to test the present nuclear models in a systematic manner. This talk will focus on developments from the 8π Collaboration, including the discovery of multiple superdeformed bands within the same nucleus and the use of high-resolution two-and three-dimensional γ-ray correlation techniques to extract band structures having very low intensity.