Background: Christopher Maurice Brown was born on May 5, 1989, in the small town of Tappahannock, Virginia, to Joyce Hawkins, a former day care center director, and Clinton Brown, a corrections officer at a local prison. He has an older sister, Lytrell Bundy, who works in a bank. Music was always present in Brown's life beginning in his childhood. He would listen to soul albums that his parents owned, and eventually began to show interest in the hip-hop scene.
Context: In January 2007, Brown landed a small role as a band geek in the fourth season of the American television series The O.C.. Brown then made his film debut in Stomp the Yard, alongside Ne-Yo, Meagan Good and Columbus Short on January 12, 2007. In April 2007, Brown was the opening act for Beyonce, on the Australian leg of her The Beyonce Experience tour. On July 9, 2007, Brown was featured in an episode of MTV's My Super Sweet 16 (for the event, it was retitled: Chris Brown: My Super 18) celebrating his eighteenth birthday in New York City. In November 2007, Brown starred as a video host for St. Jude Children's Research Hospital's Math-A-Thon program. He showed his support by encouraging students to use their math skills to help children with cancer and other catastrophic diseases. Shortly after ending his summer tour with Ne-Yo, Brown quickly began production for his second studio album, Exclusive, which was released in the United States on November 6, 2007. The album debuted at number four on the US Billboard 200 chart, selling 294,000 copies in its first week, and received generally positive reviews from music critics. As of March 23, 2011, it has sold over 1.9 million copies in the United States. The album's lead single, "Wall to Wall", peaked at number 79 on US Billboard Hot 100 chart, and number 22 on the US Hot R&B/Hip-Hop Songs chart. "Kiss Kiss", featuring and produced by T-Pain, was released as the album's second single. It reached number one on the US Billboard Hot 100 chart, and became Brown's second number one single following "Run It!" in 2005. "With You", a song produced by Stargate, was released as the third single from Exclusive, and reached number two on the US Billboard Hot 100 chart. On November 21, 2007, Brown appeared in This Christmas, a family drama starring Regina King. To further support the album Exclusive, Brown embarked on his The Exclusive Holiday Tour, visiting over thirty venues in United States. The tour began in Cincinnati, Ohio, on December 6, 2007, and concluded on February 9, 2008, in Honolulu, Hawaii. In March 2008, Brown was featured on Jordin Sparks' single "No Air", which peaked at number three on the US Billboard Hot 100 chart. He also made a guest appearance on Ludacris' single "What Them Girls Like" alongside Sean Garrett. The song peaked at number 17 on the US Hot R&B/Hip-Hop Songs chart, and number eight on the US Hot Rap Songs chart. Brown re-released Exclusive on June 3, 2008, as a deluxe edition, renamed Exclusive: The Forever Edition, seven months after the release of the original version. The re-released version featured four new tracks, including the single "Forever", which reached number two on Billboard Hot 100. In August 2008, Brown guest-starred on Disney's The Suite Life of Zack & Cody as himself. In October 2008, he was featured on T-Pain's single "Freeze", from his third studio album Thr33 Ringz. Towards the end of 2008, Brown was named Artist of the Year by Billboard magazine.
Question: what did he do next?

Answer:
On November 21, 2007, Brown appeared in This Christmas,