Oprah: Where Are They Now? on OWN

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.

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.

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.