Honestly, my first time through, I just hid behind the door and snuck around him. Considering the fact that I was carrying ALL of the gold bars at the time, this was a somewhat nerve-wracking experience, especially with trying to out-smart the game (which didn't work too well... If memory serves, I ended up needing to be *less* effective at my sneakery for things to work out). No fight, just gotta try and book it while your pockets are jingle-jangle-jinglin'.
I then saved, and promptly reloaded the treasure vault save so I could cap the old fart in the back of his head.
I think my most memorable experience from Dead Money, though, was when I was dicking around with the melee weapons despite technically being a guns build (eyyy, max INT FO:NV. Totally balanced, man!). Was fighting a ghost person in VATS with my newly-constructed knife spear, and was marveling at how the Mauler special attack seems to be a direct upgrade with absolutely no downsides (some of the melee weapons are like this, others are quite the opposite. BALANCE), so I queued up a couple and went to town on Ghostie.
What happened was absolutely glorious. So, the Mauler attack has a chance to knock down an opponent... Except in this case, "knock down" apparently means "flip that poor bastard directly into the air" and the ghost person got launched. While he was somersaulting in slow motion, the next mauler attack in queue came up, and my character did the 360 blender spin that the attack requires. On his way to completing the attack though, the timing matched up perfectly so that the ghost person was juuust flipping completely upside-down, and the knife spear blade, swinging at chest height, cleanly sliced the ghost's head off.
I've wanted to do a full-on melee build ever since.
Oh, also, Them's Good Eatin' is a waste of a perk in my opinion... You completely buy out traders with salvaged gunk, you're a "half-canninbal" without the game actually acknowledging it, and the only way of turning them into decent healing meds is to use the somewhat limited mutant cave fungus. And the base items don't even fill up your hunger! It's equal parts worthless, overpowered and just plain dumb, which doesn't sit well with me. Many mistakes were made on my first playthrough, heh.