Links 
Social Issues Representations of First Peoples by sports teams
In Whose Honor is a good film, but the web site isn't much. They do have a 3-part radio program that parallels the film available as an audio file (it fades in and out during the last part). You are best off entering through their useful Links page, which they somehow did not include a link to.
The following links were found throught NativeWeb:
End racist use of American Indian names, images, and religious symbols by Rebecca Adamson.
American Jewish Committee Statement on Team Names.
Crimes Against Humanity is the title of Ward Churchill’s article on native names, images, and symbols. The American Indian Movement doesn’t mess around.
'American Indian' Sports Team Mascots appears to be quite comprehensive and action oriented.
E-mail me more links! And comments, corrections, criticisms, etc.