Computational imaging is the fusion of computational methods and imaging techniques with the aim of producing better images, including examples where it is potentially surprising that any image can be formed at all.  The development of new imaging sensors and, in particular, instruments with single-photon sensitivity has resulted in a surge of activity in this field.  This talk will present a sampling of recent results that highlight the gains that have been made from physics-driven probabilistic modeling at the level of single-photon detection.