Participants at the memorial will include Tony Award winners David Hyde Pierce, Margo Lion, Jack O'Brien, Doug Hughes, Marc Shaiman and Scott Wittman, as well as actress Kerry Butler and director Mark Brokaw.

In addition, actors Mia Barron, David Greenspan, Jay O. Sanders, and Christopher Evan Welch will perform O'Donnell's one-act play There Shall Be No Bottom (a bad play for worse actors)

O'Donnell won the 2003 Tony Award for Best Book of a Musical for Hairspray and received another nomination in the same category for Cry-Baby (both co-written with Thomas Meehan). His other stage credits include the musical Tots in Tinseltown and the plays That's It, Folks!, Fables for Friends, The Nice and the Nasty, Strangers on Earth and Vertigo Park.