Rock Center with Brian Williams is an American weekly television newsmagazine broadcast by NBC and hosted by NBC Nightly News anchor Brian Williams. It debuted on October 31, 2011, and aired on Mondays until January 30, 2012. It aired on Wednesdays starting February 8, 2012. It is produced in the Rockefeller Center's 'Studio 3B', the same space as NBC Nightly News, and formerly that of the Today Show. The show replaced the canceled drama series The Playboy Club. Named after the location of the NBC News headquarters in the GE Building at 30 Rockefeller Center, the program is the first new NBC News program to launch in primetime since Now with Tom Brokaw and Katie Couric debuted in 1993. Rock Center is designed to be more serious than NBC's existing prime time newsmagazine, Dateline NBC, which has increasingly delved into human interest and true crime stories, and has switched from a multiple-story format into a single story format.