is that the guy from point lookout?
Yes. Also:
There's something about pickpocketing scrap metal from Outcast Casdin, but you'd have to look the forums for this, I've never tried.
There's a respawning Big Guns Book inside the Bethesda Ruins.
There's a respawning Science Book inside Shalebridge.
If you are in the Rivet City Market, you can steal all the weapons on the table at Flak's shop right in front of him, not to mention all the clothing at Bannigan's, and all the chems at that girl's. (I couldn't make it work with that guy with the motorcycle helmet. He freaks out instantly.) You pick them up, but don't "take" them, and carry them all over one by one behind a sandbag emplacement near the door to the Midship deck. Once you've brought them all over there, SAVE YOUR GAME, crouch, wait to be hidden, or pop a Stealthboy, and steal them all. You make a hard save, because sometimes everyone freaks out and puts the beat down on you, but usually you can just walk out of there.
I did most of these in the beginning of playing, but now I don't. I don't know about the Unarmed deal, but just on normally playing, if you are an Unarmed Master, you are a god anyway by level 20...