Oprah sits down with global superstar, multiplatinum artist and 17-time Grammy winner Beyoncé at the London NYC in New York City to discuss the making of her documentary Beyoncé: Life Is But a Dream. Plus, Beyoncé opens up about her daughter, Blue Ivy; what Jay-Z is like as a father and a husband; and her heartbreaking miscarriage. Then, find out why she let her father, music executive Mathew Knowles, go as her manager and what's next for her, personally and professionally.

As the first anniversary of music icon Whitney Houston's sudden death draws near, Oprah sits down with the singer's mother, Cissy Houston, for her first in-depth interview since her daughter's passing. The superstar's mother talks about raising a daughter whose voice became a national treasure, teaching Whitney about the music business, and her biggest regrets.

Oprah also talks to Cissy about Whitney's drug use, how she really felt about her daughter's marriage to R&B singer Bobby Brown, and the true nature of Whitney's relationship with her high school best friend, Robyn Crawford. Later, for the first time since Whitney's death, Oprah talks to her older brother Michael Houston. In an emotional discussion, Michael reveals the origin of Whitney's drug use.

Oprah sits down with multiplatinum artist and actor LL Cool J at his home in Los Angeles for a rare interview. The star of NCIS: Los Angeles opens up about his career, his sex-crazed youth, his abusive childhood and the night he woke up to find a stranger in his home. He also talks about how his marriage and family made him the man that he is today. Later, his wife, Simone, and their four children join the conversation.

For the first time ever, actress Drew Barrymore allows cameras inside her home as she sits down for a revealing conversation with Oprah. Drew discusses her marriage to Will Kopelman and opens up about their newborn baby, Olive. Plus, Drew talks about overcoming her own troubled childhood and contemplates her remarkable 30-year career.

In Part 2, Lance Armstrong speaks exclusively with Oprah in Austin, Texas, during his first no-holds-barred interview since he was stripped of his seven Tour de France titles. Lance addresses the alleged doping scandal, years of accusations of cheating, and charges of lying about the use of performance-enhancing drugs throughout his cycling career.

Look back at Part 1 of Oprah's conversation with Lance

This is his first interview since he was dropped from millions of dollars in endorsement deals and given a lifetime ban from competing professionally. Late last year, Lance resigned as chairman of the foundation he created, Livestrong, which has raised hundreds of millions of dollars in the fight against cancer.