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.

Actor/Director Bill Paxton researches his paternal lineage, uncovering the captivating life of an ancestor who was a war hero in an historic battle and who shaped politics and society during a turbulent era.

As Bill Paxton uncovers facts about his ancestor's role in the American Revolution, he also learns a surprising history lesson.

Studying the annals of southwest Virginia, Bill Paxton surmises how his ancestor, Benjamin Sharp, became such a powerful force in government.

Melissa Etheridge's ancestor Charlotte weds the father of her first child, born out of wedlock, and has another child with him...just six months after the legal union.

As Melissa Etheridge learns more about her successful, wealthy ancestors, she asks a historian how a family can go from having it all to having nothing within a matter of generations

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.

At 700 lbs, Chad was so overweight that he quit his job and began a weight loss program with Dr. Now. After dieting and bypass surgery, he lost almost 300 lbs. Now, Chad looks to goals he must achieve in order to get cleared for skin removal surgery.

After being stuck in bed for 10 years and then finally losing weight, Lupe claims she's lost the strength to get out of bed.

Ashley is more mobile and independent than ever before and it's freed her young son, Patrick from the burden of being his mom's caretaker. However, now Ashley is struggling with her excess skin.

Gastric surgery freed Brittani from her housebound life, but to achieve her ideal body she'll have to endure more painful surgeries.

After going into Dr Now's weight loss program and receiving a sleeve bypass operation, Sean lost over 300 pounds. Yet his underlying issues persist, keeping him largely immobile.

Since her gastric sleeve surgery Teretha has lost over 300 pounds. However, she remains in bed and needs another surgery.

When we catch up with Nikki, we find she's continued to lose weight and is incredibly happy with her healthier life. It allows her to not only help herself, but the family who has always taken care of her.

Though feeling proud of her progress, Nikki is still feeling held back by the excess skin in her mid section. Her new goal is to get approved for skin surgery.

Dottie takes some time for herself to work out with a trainer and reach a healthier place.

Despite the strides June has made with her weight-loss, she still struggles to handle with the remaining excess skin.