Photo Flash: Hugh Jackman, Victor Garber, Jerry Mitchell, Diane Sawyer and More Visit Jack O'Brien at 54 Below

This weekend, Tony Award-winning Director Jack O'Brien celebrated his "Diamond Jubilee" by taking to the stage of 54 Below with his show "I''ve Still Got My Health, So What Do I Care?" Scroll down for photos from the concert!

Among those in the audience members who came back stage to visit O'Brien and best wishes after the show were Hugh Jackman (The River), Victor Garber (Titanic, "Alias"), Emmy award winner and news anchor Diane Sawyer, Academy Award and Tony Award winning director/producer, Mike Nicholas (The Graduate, Closer), Kathy Najimy ("Veep"), Academy Award nominee Marsha Mason ("The Middle," Only When I Laugh), actress Debora-Lee Furness ("SeaChange"), Tony Award-winning director/ choreographer Jerry Mitchell (Kinky Boots, Catch Me If You Can), Tony Award winning producer Margo Lion (Catch Me If You Can, Hairspray), Tony Honor recipient and Broadway general manager Charlotte Wilcox (Beautiful, The Carole King Musical), and Tony Award-winning proprietors of 54 Below Richard Frankel and Tom Viertel (Hairspray).

For more details about Jack O'Brien's 54 Below engagement, "I''ve Still Got My Health, So What Do I Care?," visit http://54below.com/artist/jack-obrien.

Photo Credit: Cindy Ord/Getty Images for 54 Below (unless otherwise specified)