section: Promotion
question: What show did the cast of Glee also perform on in December 2010?
article: Glee (TV series)
candidates: Prior to the second episode's premiere, "Glee"'s cast went on tour at several Hot Topic stores across the nation. The cast sang the U.S. national anthem at the third game of the 2009 World Series. Macy's invited them to perform at the 2009 Macy's Thanksgiving Day Parade, but host broadcaster NBC declined because "Glee" aired on a rival network. Murphy commented on the cast's exclusion: "I completely understand NBC's position, and look forward to seeing a Jay Leno float. "The show's success sent the cast on a concert tour, Glee Live! In Concert! after the first season's wrapup. They visited Phoenix, Chicago, Los Angeles, and New York. The cast also recorded a cover of Wham! 's "Last Christmas", which was released as a single in late 2009 but didn't appear in the show until "A Very Glee Christmas" on December 10, 2010. Morrison, Lynch, Michele, Monteith, and Colfer reprised their roles as Will, Sue, Rachel, Finn, and Kurt respectively for a cameo appearance in an episode of "The Cleveland Show" that aired January 16, 2011. Michele, Monteith, and Riley appeared as campers in the twenty-second season premiere of "The Simpsons". Lynch, Colfer, Monteith, and Riley appeared at the 2010 MTV VMAs on September 12, 2010. When Agron, Michele, and Monteith posed for a set of risqué photos for the November 2010 edition of "GQ" magazine, Parents Television Council (PTC) criticized the show; PTC president Tim Winter commented that "Glee" has many young fans, and that "by authorizing this kind of near-pornographic display, the creators of the program have established their intentions on the show’s direction. And it isn't good for families. "The promotional posters for the first season have the show's stars using their right hands to make an "L" to fill in the "L" of the word "Glee". The second season's promotional posters have the stars throwing slushies at the camera in pairs. The third season's promotional posters have the stars getting dodgeballs thrown at them by Sue Sylvester. While the cast concert tour, Glee Live! In Concert!, began on May 15, 2010, and presented concerts in four cities in the US that month, the second edition, with an almost-entirely new set list, toured for four weeks in the US and Canada from May 21 through June 18, 2011, and followed with twelve days in England and Ireland, from June 22 through July 3, 2011. The cast also performed on the seventh season of "The X Factor" on December 5, 2010.