Off the top of my head, the following codes should work in Fallout: New Vegas like they did in Fallout 3.
Let me know if they don't.
TGM = Toggles God mode, otherwise known as let's lob nukes around all the time.

Also gives infinite ammo and AP.
TCL= Toggles Clipping, which allows you to walk through objects if you get stuck.
I used this a lot more in Morrowind.

What's the command for setting your max inventory weight again? I think that works in New Vegas.
Also,
AddSPECIALpoints should work. I think that's what it's called too.