Truth
http://journalism.about.com/od/ethicsprofessionalism/a/objectivity.htm
Bias
http://www.media-awareness.ca/english/resources/educational/handouts/broadcast_news/bw_bias_in_the_news.cfm
Editorial
http://en.wikipedia.org/wiki/Editorial & http://www.asbpe.org/archives/1999/03wined.htm
Documentary
http://www.slideshare.net/acarvin/documentary-making-101
