-- intro: For a litany of reasons, 2015 was an action-packed year.
For many, it was good. Some stars saw great professional gains: Adele's newest record has shattered records while Taylor Swift performed for screaming crowds around the world. Others, Caitlyn Jenner and Tracy Morgan among them, celebrated personal triumphs.
With 2016 just a few weeks away, let's look back on the moments that made 2015 so notable in the world of entertainment.
quicklist: 4title: Bill Cosby's Accusers Speak Outtext: Late last year, more than a dozen women came forward to accuse Bill Cosby of drugging and/or sexual misconduct. This year, that number grew to more than 50. New York magazine published a stunning cover story in July featuring 35 of the women sitting in chairs, staring straight into the camera. A few months later, 13 spoke out in an A&E documentary entitled, "Cosby: The Women Speak." "He's given us all a purpose; a sisterhood purpose," Lise-Lotte Lublin said during the special. "We're going to make a change in the world. We've already started." Through his lawyers, Cosby has denied allegations of wrongdoing and has never been charged with a crime. Then, in December, he filed a counter-suit against seven women who were suing him for defamation, accusing them of making "malicious, opportunistic and false and defamatory" comments about him and costing him lucrative business opportunities. Their lawyer wasn't surprised. "It's a standard defense attorney’s play," he told ABC News at the time. A week later, he filed a separate defamation suit against Beverly Johnson, who claims that in 1986, Cosby drugged her. The comedian accused her of spreading lies to further her career. "In cases of rape and abuse, abusers will do whatever they can to intimidate and weaken their victims to force them to stop fighting," she responded. "I ask for your support of all of the victims involved." media: 35640601
quicklist: 6title: Tracy Morgan Returns to the Emmys and 'Saturday Night Live'text: In 2014, Tracy Morgan was involved in a serious auto accident that left him seriously injured, and his friend, comedian James McNair, dead. In September, he made a triumphant comeback, appearing onstage at the Emmy Awards. "It's been a long road back,” he said at the time. “I suffered a traumatic brain injury that put me in a coma for eight days ... [and when I woke up] I was just ecstatic to learn I wasn't the one who messed up." Then, Morgan, who was married over the summer, returned to the place where he got his big break in show-business: "Saturday Night Live. "[After the accident], people were wondering, 'Can he speak? Does he have 100 percent mental capacity?'" he said in his monologue. "But the truth is -- I never did. I might actually be a few points higher now."media: 33910394
quicklist: 7title: David Letterman Bids Farewell to 'The Late Show'text: For a number of reasons, we're living in what has been touted as "the Golden Age of TV." However, 2015 marked the end of several shows that audiences have cherished for some time. David Letterman bid farewell to "The Late Show" in May, and a few months later, Jon Stewart said goodbye to his "Daily Show" fans. Other shows that ended this year included "Mad Men," "Parks and Recreation," "Justified" and "Glee."media: 35645711
quicklist: 8title: Charlie Sheen Reveals He's HIV-Positivetext: In recent years, Charlie Sheen had been as famous for his acting work as he was for his "winning" jokes and partying lifestyle. However, this past November, he gave an interview to the "Today" show to discuss a much more serious topic: His HIV diagnosis. "I'm here to admit that I am in fact HIV positive," he told Matt Lauer. "I have to put a stop on this onslaught, this barrage of attacks, and of sub-truths and very harmful and mercurial stories that are about the threatening the health of so many others, which couldn't be farther from the truth." Sheen explained that he was diagnosed with HIV four years ago, and insisted that he'd been honest about his status with every sexual partner he's had since. Now, he wants to help others. "I have a responsibility now to better myself and to help a lot of other people," he said. "Hopefully with what we're doing today, others may come forward and say, 'Thanks Charlie. Thanks for kicking the door open.'"media: 35645174
quicklist: 9title: Adele's Big Comebacktext: It seemed so unfair: Adele released "21" in 2011, scooped up six Grammy Awards for it, and followed it up immediately with... nothing. For nearly five years, Adele fans anxiously waited for the singer to come out with a new album, and on Nov. 20, 2015, finally, finally, it happened. The singer's third album, "25," which features the singer's hit single, "Hello," sold 3.38 million copies in the U.S. in its first week and broke records previously held by the NSYNC and Britney Spears. After three weeks, it had already sold 5 million units, according to Variety, and the singer announced her 2016 world tour. Here's hoping that means even more Adele next year.media: 35645589
quicklist: 10title: 'Star Wars: The Force Awakens' Premieres to Great Fanfaretext: For more than a year, "Star Wars" fans had been counting down to Dec. 18, the day "Star Wars: The Force Awakens" hit theaters. Then, they came out in droves, causing the J.J. Abrams-directed film to shatter movie records. The Walt Disney Company, which owns the production company behind the movie, Lucasfilm, as well as ABC News, announced that it earned $517 million worldwide over opening weekend. It also set a new record for a Thursday night preview, bringing in $57 million, and became the biggest single-day sales for any movie, and the biggest Friday a film had ever seen, earning $120.5 million. "The Force Awakens" was also the fastest film to reach $100 million, and the first film to earn more than $100 million on a given day. The force was strong with that one.media: 35640544