"Nightline" crisscrossed the globe to report on the year's biggest breaking news events, the hottest trends, the most scathing celebrity scandals and more. Here's a look back at our most popular stories of 2010 on ABCNews.com.
Acai berries are the so-called "miracle" super food from the Amazon. In March, "Nightline" reported on how differently this fruit was marketed in Brazil than in the United States.
In its native country, Acai are mashed into a pulpy drink full of antioxidants. Farmers nicknamed the popular drink "purple gold." In the U.S., the fruit is sometimes sold in pill form and was promoted as a weight loss supplement in a series of Internet scams.
Former Canadian Air Force pilot Russell Williams was sentenced to two concurrent life sentences in October for the murder of two women.
During the trial, prosecutors exposed the dark side of the former commander, revealing a history of twisted sexual fetishes. "Nightline" reported on how Williams broke into young women's homes, stole their underwear, and often photographed himself in the women's panties.
After his divorce from actress Sandra Bullock, Jesse James spoke publicly for the first time in an exclusive "Nightline" interview in May about how he cheated on his Oscar-winning wife and shattered their relationship.
I "took a pretty amazing life and amazing success and marriage ... and threw it away by my own hands," James told ABC News' Vicki Mabrey.
A new book drew enormous attention when it was released this summer because it claimed to be full of tantalizing secrets about the world-famous actress.
Andrew Morton, author of "Angelina: An Unauthorized Biography," claimed in his book that the actress' late mother, Marcheline Bertrand, caused Jolie's rebellious behavior in her younger years.
Months after her marathon plastic surgeries, reality TV star Heidi Montag sat down with ABC News' Juju Chang in January to discuss her shocking transformation and how much pain the surgeries had put her through.
Montag had 10 procedures done, including breast implants, a brow lift, a nose job revision, Botox injections, fat injections in her cheeks and a chin reduction. She had neck liposuction and had her ears pinned back.
At the time, Montag flatly denied she was addicted to plastic surgery, but changed her story in a November interview with ABC News' Cynthia McFadden.
After years of denial, cyclist Floyd Landis admitted to using performance-enhancing drugs and claimed his former teammate, Lance Armstrong, also was doping during races.