Baldwin, according to an NBC press release, will join the previously announced Liza Minnelli, Ne-Yo, Alanis Morissette, Kathy Griffin and Jane Krakowski for the NBC variety special, which will air Nov. 26 at 8 PM ET live from New York's Little Shubert Theatre.

"Rosie Live" will feature "a topical monologue, musical production numbers and hilarious comedy sketches." The program is produced by Universal Media Studios in association with KidRo Productions. O'Donnell and David Friedman are the executive producers.

Alec Baldwin was most recently on Broadway in Twentieth Century. His other Broadway credits include A Streetcar Named Desire (Tony nomination), Serious Money and Loot (Theatre World Award). Baldwin was also nominated for an Academy Award for his performance in "The Cooler" and won an Emmy for his work in "30 Rock."

Rosie O'Donnell made her Broadway debut as Rizzo in the 1994 revival of Grease!, played a limited engagement as the Cat in the Hat in the Ahrens-Flaherty musical Seussical, and portrayed Golde in the recent revival of Fiddler on the Roof. The performer also spent some time on the other side of the footlights as producer of the Broadway version of Boy George's Taboo.

O'Donnell rose to fame as a stand-up comic before landing roles in such films as "A League of Their Own," "Sleepless in Seattle," "The Flintsones" and "Exit to Eden." Her Emmy-winning talk show, "The Rosie O'Donnell Show," ran from 1996 to 2001, and her more recent TV credits include appearances on "Will & Grace" and "Queer as Folk" as well as the made-for-television movie "Riding the Bus with My Sister" and the cable series "Nip/Tuck." She also spent a year as co-host of ABC-TV's "The View." O'Donnell is married to Kelli Carpenter O'Donnell; the couple has four children. O'Donnell's autobiography is titled "Find Me"; her newest book is "Celebrity Detox."