The Nexus section for Fallout New Vegas contains around 16.000 mods, with new being added every day. Thankfully, like all games published by Bethesda, it means that the game has an enormous modding community.
Much like earlier Obsidian game Knights of the Old Republic 2, what we got in Fallout: New Vegas was only part of what was planned, or even implemented only to be dummied out. If you haven’t played it yet and love RPG’s, get it here. *Insert some introductory blabla about the game, as if anyone who doesn’t know Fallout New Vegas is going to read this*