Ongoing SETI Observation Programs at the ATA

The Allen Telescope Array is designed for commensal observing with multiple users making spectral images at multiple freqeuncies and forming real time single-pixel beams in multiple directions at the same time. At the ATA, most SETI observations use beamforming and very high spectral resolution to perform targeted and wide area surveys of the sky, sometimes sharing the observing time with conventional astronomical observations with the imaging correlator. We shall briefly review several ongoing SETI programs as demonstrations of the capabilities of the ATA.