Proof written by David Auburn opened on Broadway at the Walter Kerr Theatre October 24, 2000 and ran until January 05, 2003 for 16 previews and 917 performances
Manhattan Theatre Club (Lynne Meadow, Artistic Director; Barry Grove, Executive Producer), Roger Berlind, Carole Shorenstein Hays, Jujamcyn Theaters, OSTAR Enterprises, Daryl Roth and Stuart Thompson.
Directed by Daniel Sullivan; Scenic Design by John Lee Beatty; Costume Design by Jess Goldstein; Lighting Design by Pat Collins; Incidental music & Sound Design by John Gromada; Assistant Scenic Design: Eric Renschler; Assistant Costume Design: Daryl Stone; Associate Lighting Design: D. M. Wood; Assistant Sound Design: Michael Creason.
General Manager: Stuart Thompson Productions; Company Manager: James Triner; Technical Supervisor: Neil A. Mazzella; Production Stage Manager: James Harker; Stage Manager: Heather Cousens; General Management Assistant: Caroline Prugh; MTC Director of Casting: Nancy Piccione; Casting Director at MTC: David Caparelliotis; Press Representative: Boneau / Bryan-Brown; MTC Associate Artistic Director: Michael Bush; Dramaturg: Christian Parker; Advertising: The Eliran Murphy Group, Ltd. and Jon Bierman; Marketing Consultant: The Marketing Group, Leanne Schanzer Promotions and Keith Hurd; Online Marketing by Toby Simkin; Photographer: Joan Marcus
Starring Mary-Louise Parker (Catherine); Larry Bryggman (Robert); Johanna Day (Claire); Ben Shenkman (Hal) with Understudies: Caroline Bootle (Catherine, Claire), Adam Dannheisser (Hal) and Ron Parady (Robert)
Notable cast replacements from July 02, 2002 – January 05, 2003 include Len Cariou (as Robert) and making their Broadway debut, Neil Patrick Harris (as Hal) and Anne Heche (as Catherine)