I'm trying to figure out the best way to be able to "tag" one or more users to associate with a piece of content so that it can show those users' avatars and a link to their profile. The context for this is that I'd like to be able to apply credits to videos (directors, producers, writers, cast, etc.) and list them as meta data in the post that can be selected in the admin area much like categories and tags. Ideally, I would also have user profiles that have the author's photo, bio, and a list of their credits (a list of all posts their tagged in).
Is this possible with any combination of existing plugins?