1up has an article up today entitled "30 facts from 30 games you don't already know", Even with that grammatically ambiguous title there is one interesting fact about Fallout: New Vegas:

Fallout New Vegas:: According to project director Josh Sawyer, "All of our internal teams [design, art, etc.] are named after brands in the Fallout universe. So we have Team Psycho, Team Mentat, Team Nuka, Team Jet, and Team Fancy."

The full article is here: