This article includes a list of hosts and commentators of the Olympic Games on NBC.
Source (please note that the paragraph containing the anchors for the 2008 Olympics was accidentally copied and pasted into the capsule for the 2010 Olympics):
Source for all other commentators without individual sources:
Bob Costas had health problems with his eyes so, the following substituted for him:
*These announcers were to call the action in their respective sports from NBC's headquarters in New York City.
NBC did not plan coverage of judo, sailing, or taekwondo on any of its networks. Coverage in the U.S. was to be available only online at NBCOlympics.com.
*These announcers called the action in their respective sports from NBC's headquarters in New York City.
*These announcers called the action in their respective sports from NBC Sports Group’s International Broadcast Center in Stamford, CT
Source:
*Source for all commentators, hosts, and reporters; please note that the press release does not specify which sports Knapp, Watson, and Corey are covering during the Games:
*All commentary for sports and ceremonies is being done from the NBC Sports Group International Broadcast Center in Stamford, Connecticut.