Nancy Princenthal, Gregory Volk and John Zinsser join David Cohen to review Rudolf Stingel at the Whitney, Raymond Pettibone at David Zwirner, Julie Heffernan at PPOW, Georgina Starr at Tracy Williams and Ingrid Calame at James Cohan

clockwise from top left: installation shots, Rudolf Stingel at the Whitney, and Raymond Pettibone at David Zwirner Gallery, Julie Heffernan's Self-Portrait with Men in Hats, 2007, at PPOW, and installation shots of Ingrid Calame at James Cohan Gallery, below, and Georgina Starr at Tracy Williams, Ltd.

Rudolf Stingel

Raymond Pettibone

Julie Heffernan

Georgina Starr and Ingrid Calame