Episodes are produced in seasons which consist of twenty 24-minute episodes. The episode ranks highly in lists of the best "Community" episodes. Of eight episodes completed, only five aired. It was canceled after 11 of the 14 produced episodes were aired. A series of eight 60-minute episodes was produced. The series consists of twelve 25-minute episodes and two extras. Production of the first seven episodes of the sixth series began. A total of 324 episodes have aired. Anthrax attacks have featured in the storylines of various television episodes and films. The final two episodes aired in March 2013. Moriarty appears briefly in some of the fourth series episodes. An additional 13 episodes aired in 2000. These three were responsible for 127 of the 156 episodes in the series. Two seasons consisting of a total of 24 episodes were produced. Marvel released three roundtable discussions in support of the series reaching 100 episodes.