Heidi Fleiss, aka the 'Hollywood Madam,' says that when she and brothel owner Dennis Hof first decided to renovate the Love Ranch, a brothel in Crystal, Nevada, it looked more like a penitentiary than a place anyone would enter voluntarily. Watch as she gives a rare tour inside the space and explains the additional renovations they have planned.

When Bow Wow appeared on 'The Oprah Show' in 2003, the then-16-year-old rap star revealed that he had a $6,000-per-month allowance, which he often spent in its entirety. Now age 26, Bow Wow looks back on his once-flashy lifestyle and reveals how drastically things have changed.

In 2007, organizational expert Peter Walsh helped compulsive hoarder and self-described shopaholic Sharyn Dorfman to completely transform her chaotic and cluttered home into a clean and pristine space. Today, Sharyn reveals the aha! moment that has helped her keep her home free of clutter since the intervention, and shares the best part of her life as a reformed hoarder.

In 2002, Oprah walked into Mrs. Faruta's kindergarten classroom with a special surprise for the beloved teacher: Mrs. Faruta was being sent to the spa for the day while 'Miss Winfrey' would take over her classroom duties. However, it turned out that hosting a daily talk show may have been a little easier than managing so many adorable children.

On April 4, 2013, we were all heartbroken to learn Roger Ebert had died after his long battle with cancer. Look back on a few of his 21 'Oprah Show' appearances, from the time he talked about his one-time date with Oprah, way back when, to his final appearance in 2010, when his wife, Chaz, read one of Roger's great life lessons from his personal journal.

When Heidi Fleiss, the 'Hollywood Madam,' was asked to join 'Celebrity Rehab with Dr. Drew,' she rejected the notion that the experience would benefit her (other than financially). But appearing on the reality program, Heidi now says, was a true eye-opener. Watch as she talks about the realization that she had "a serious drug problem," and find out if she has been able to stay clean since her 'Celebrity Rehab' days.

Ever since her arrest for running a prostitution ring in the '90s, Heidi Fleiss has remained quiet about the identities of her elite clientele. Yet, the public still found out that Heidi did business with Charlie Sheen. Watch as the "Hollywood Madam" reveals the mistake that led to this information leak.

Melanie and Byrd 'Bud' Billings were brutally gunned down in their home in 2009, with nine adopted special-needs children sleeping nearby. The Billings' oldest daughter, Ashley, and her husband, Blue, were left to care for her nine younger siblings. Watch to see how life has changed for the couple, and hear what the children remember about their late parents.

Actress Diane Farr experienced an extreme breakup when her fiance of six weeks decided he couldn't go through with the wedding. Devastated, Diane decided to spend the next year focusing on herself. That was nine years ago. Did she ever find Mr. Right? Watch to see what Diane's life is like today.

Chandra Levy, a government intern working in Washington, D.C., disappeared without a trace in 2001. A year passed before her remains were discovered in a Washington park. More than a decade later, her parents, Robert and Susan, say their grief is still 'gut-wrenching.' Watch as they discuss the loss of their daughter and their doubts about whether her true killer has been caught.