(This is all on console)

Well basicly I had recruited 3 followers using this glitch: http://www.youtube.com/watch?v=VoDZjTMVLXU

And basicly I found out that with 3 followers you can leave one follower behind then travel to any dlc locations. This means that I can bring a companion to the Sierra Madre (Confirmed), Zion (Confirmed), and I am assuming I can bring them to the divide and Big mountain the same way. Using this glitch you can also pack some stuff on your companion so when you go to the sierra madre you can take some stuff with you. For instance I can give my companion a shotgun, travel to the madre then take it off him when we get there.

Just thought I'd share because many people complain about not being able to bring stuff to dead money, and with this you can bring some weapons with you.

(Also for those of you who want to bring companions to big mountain or zion or the divide)

I accidently brought an npc ranger into dm when I was fooling with the radio, she would not fight or even react to the ghosts, but when she died(yeah yeah I ganked her) I did get a nice suit of armor and a cowboy repeater roflol!

So this way you could bring back most of the gold bars by getting the companion to hold them?