A FAMILY IS A FAMILY IS A FAMILY: A ROSIE O'DONNELL CELEBRATION SPOTLIGHTS THE DIVERSITY OF MODERN FAMILIES WHEN THE DOCUMENTARY DEBUTS JAN. 31, EXCLUSIVELY ON HBO

What is a family? Sometimes it's a mom and dad and their kids. Or it might be kids with just a mom or dad. Or it could be kids who have more than one mom or dad. While the answer varies, all families share one vital ingredient: love.

A FAMILY IS A FAMILY IS A FAMILY: A ROSIE O'DONNELL CELEBRATION is a moving portrait of the remarkable diversity of families today that challenges stereotypes, highlighting same-sex parents, mixed-heritage families, single parents and stories of adoption. Children speak from the heart about parents, siblings, marriage and love in the exclusive documentary, debuting SUNDAY, JAN. 31 (7:00-7:40 p.m. ET/PT) on HBO.

Other HBO playdates: Feb. 4 (8:45 a.m., 8:00 p.m.), 6 (5:30 p.m.), 9 (12:45 p.m., 8:00 p.m.), 14 (12:30 p.m.), 18 (11:30 a.m.) and 22 (5:00 p.m.)

HBO2 playdates: Feb. 17 (8:30 p.m.), 25 (9:00 a.m.) and 28 (11:15 a.m.)

In the special, Rosie O'Donnell talks with her daughter Vivienne Rose about how their family � which includes sister Chelsea, brothers Parker and Blake and parents Rosie and Kelli � came about. Following her recent separation from Kelli, O'Donnell reaffirms the importance of family in a talk with Vivienne Rose, saying, "Even though Mommy Kelli and I aren't living in the same house anymore, we're still a family. Family is forever. And family is love."

In A FAMILY IS A FAMILY, kids offer touching, profound and often funny insights about what being a family means to them. Among those featured are: children with two fathers or two mothers; a girl whose mother and father adopted her in China; three brothers who live with their mother and grandmother; a pair of mothers who are getting married to make one big family; and families with adopted kids and children born through in-vitro fertilization.

Lianne and Katia think a family is a mommy and a daddy. Franklin says a family is "a bunch of people that live together for their life." Kennan and Adam are nearly stumped trying to name all the possible combinations of parents and kids. Becky sums it up best, saying, "It doesn't matter if you have one parent. It doesn't matter if you have two moms. It doesn't matter if you have two dads. Just stick with it. A family is a family."

Interspersed with these portraits are musical performances and animated interludes, including: reggae star Ziggy Marley, his mother Rita Marley and sister Cedella Marley performing "I Love You Too"; four-year-old Najorae and her father singing their original song "Love Is the Thing;" 11-year-old Martin and his seven brothers and sisters performing "Cari�o (My Love)," nine-year-old Joey singing "Raised on Love," a song he wrote with his mom and dad; and folk musician Elizabeth Mitchell performing "Blue Clouds" with husband Daniel Littleton and seven-year-old daughter Storey.

O'Donnell's tongue-in-cheek performance of "My Science Project" tells the animated story of a young girl whose class project describes the scientific way she came to be. And Frank Sinatra's rendition of "Too Marvelous for Words" is accompanied by an animated sequence of a sperm in top hat serenading a glamorous egg.

The soundtrack of A FAMILY IS A FAMILY IS A FAMILY also includes original songs written for the special, among them: "And Mom and Kid," by They Might Be Giants, "My Family," by Sweet Honey in the Rock and "A New Generation (Conner's Theme)," by Charles Strouse. In addition to "Too Marvelous for Words," classic recordings featured are "Baby Mine," sung by Bonnie Raitt and Was (Not Was) and "A Bushel and a Peck," performed by Doris Day.

A FAMILY IS A FAMILY IS A FAMILY is directed and produced by Amy Schatz, whose credits include such award-winning HBO family productions as the "Classical Baby" series and the special "Goodnight Moon & Other Sleepytime Tales." Some of the recordings are brought to animated life by Emmy(R)-winning animator Maciek Albrecht, whose previous HBO credits include the "Classical Baby" series and numerous other productions.

A FAMILY IS A FAMILY IS A FAMILY: A ROSIE O'DONNELL CELEBRATION is executive produced by Rosie O'Donnell and Sheila Nevins for HBO Documentary Films; directed and produced by Amy Schatz; produced by Beth Aala and Sabina Barach; edited by Tom Patterson; directors of photography, Alex Rappoport and Joel Shapiro; animation by Maciek Albrecht; music supervisor, Linda Cohen; production executive, Susan Benaroya; supervising producer, Jacqueline Glover.