Jennifer Aniston 24 Hour Play in New York Nov. 16, 2010 - By Retna

Jen surprised everyone by making a beeline from the set of Wanderlust to appear on stage for the 24 Hour Play sponsored by

Montblanc and benefiting the Urban Arts Partnership.

From People Magazine:

The actress, 41, made a surprise cameo on stage Monday night as part of the 24 Hour Plays on Broadway charity event in New York. Surprising the audience and her castmates, she played the spirit of a dead dog in The Bitch Downstairs, one of six short plays written and performed in the space of 24 hours.
Aniston shared the stage with Kyra Sedgwick, Sam Rockwell, Lee Pace and Nia Vardalos, among others, at the event, which was sponsored by Montblanc and benefiting the Urban Arts Partnership.