When "Who Do You Think You Are?" returns on Tuesday, Feb. 24 at 10/9c, celebrities will discover life-altering truths about their ancestors.

Lisa Kudrow visits The Talk to promote the newest season of "Who Do You Think You Are?" and announce that Talk host Julie Chen will appear on the show!

Julie Chen never knew her maternal grandfather; he died long before Julie was born. All she had heard was that he was a wealthy playboy with a rags-to-riches story.

As award-winning singer Josh Groban digs into his eight times great-grandfather's successful life in Germany, he has an uneasy feeling. Why did he give it all up?

WHO DO YOU THINK YOU ARE? returns this spring to give eight new celebrities a unique opportunity to dig into their roots and learn more about their family history. New episodes begin Sunday, March 8 at 10/9c.

Get to know Dan Bucatinsky, Executive Producer of "Who Do You Think You Are?" In this video, the actor, author, dad and TV fanatic answers questions about his life and career.

Actor/Producer Sean Hayes searches for the cause of his estranged father's troubled past and uncovers a shocking trail of tragedy and crime that reaches back generations.

America Ferrera searches for a connection to a father she barely knew, and discovers a great grandfather who led multiple revolts against the government and left an enduring mark on Honduran history.

When Julie Chen visits her great-grandfather's grave and notices the beautiful view it commands, a historian explains that graves were ordered by principles of feng shui.

Melissa Etheridge digs into her French roots and finds a family shaken by a scandalous lawsuit; a turbulent relationship entangled with tragedy; and an adventuresome ancestor who prospered in colonial America.

America Ferrera and her sister look at old family photos and share memories of their dad, who left when she was just eight.

Tony Goldwyn's 3 times great-grandparents were political activists behind the Seduction Act. He learns why this legislation was so important to them.

Beyond a family of Hollywood legends, actor/director Tony Goldwyn explores his maternal lineage. He is introduced to a heritage of political activism; a couple ahead of their time proudly fighting for abolition, women's rights and westward expansion.

Josh Groban studies a record book of his eight times great-grandfather's academic career and has fun making a few assumptions about the man's character and style.

Angie learns that her ancestor Michael Harmon reported to one of George Washington's toughest generals. That said, Michael's promotion to corporal was a pretty big deal!

With her distant relative and a translator, Julie Chen visits the house owned by her great-grandfather and sees the place where her grandfather was born.

Get a first look at Smokey Robinson’s journey of exploring his family history.

Katey Sagal learns more about her family tree and how her Amish ancestors arrived in Pennsylvania.

Smokey Robinson continues to learn about the surprising path of his maternal grandfather.

Josh Groban studies a record book of his eight times great-grandfather's academic career and has fun making a few assumptions about the man's character and style.

Molly Ringwald explores family lore of Swedish royalty, which uncovers her ancestors' harrowing lives and reveals women who suffered through unspeakable tragedies, and one brave immigrant who forever changed her family's fate.

Molly Ringwald explores family lore of Swedish royalty, which uncovers her ancestors' harrowing lives and reveals women who suffered through unspeakable tragedies, and one brave immigrant who forever changed her family's fate.

Get a first look as actor John Stamos digs into his family history.

Actress Angie Harmon begins a personal journey to unlock the mysteries of her ancestors.

Actor John Stamos meets with modern Greek historian Katerina Lagos where he learns that his paternal grandfather is listed as an orphan at only age 13.

Molly Ringwald explores family lore of Swedish royalty, which uncovers her ancestors' harrowing lives and reveals women who suffered through unspeakable tragedies, and one brave immigrant who forever changed her family's fate.

Angie learns that her ancestor Michael Harmon reported to one of George Washington's toughest generals. That said, Michael's promotion to corporal was a pretty big deal!

Actor John Stamos discovers his paternal great-grandfather was murdered in a village in Greece.

Chris Noth tracks down family torn apart by a devastating disaster when he follows his relative's trail from Spain to Ireland and finds a man who endured oppression, but rose up to fight in one of the fiercest battles of all time to become a war hero.

Consulting a record of Michael's will and a book about the Harmon family, Angie learns that her ancestor was a clear-headed man who valued justice. She becomes emotional when she discovers his stance on slavery.

Chris Noth finds an ancestor who endured oppression, but rose up to fight in one of the fiercest battles of all time to become a war hero.

Actor/Producer Sean Hayes searches for the cause of his estranged father's troubled past and uncovers a shocking trail of tragedy and crime that reaches back generations.