Trigger Discipline: I pick this, not just because of the accuracy, but it puts me in the mindset of being conservative when it comes to firing my weapon. I want the ammo to count unless I am giving suppression fire. However, I do have to say there's those "uh oh" moments where the "fire everything you've got" mentality is appropriate at the time. It contributes to my roleplaying moods.
Kamikaze: Usually, from my roleplaying standard, my characters tend not to have anything to lose anymore, so they typically do daring stunts that would get them killed. Do I die in playthroughs from this sometimes? Yes, but somehow I get lucky when I use this perk for the most part.
Survivalist: I think this should be self-explanatory. I want to be able to use the resources that are left in the world. If I have no companions with me, this is useful and essential to me. In a post-Apocalyptic world, this would be one of the things you would probably pick. You don't want to die do you?
Strong Back: This proves useful, especially since I'm one of those 'ooh shiny' kinds of people in RPG's, but I've gotten better about that over the years.

Rad Resistance: Need I say more?
Master Trader: When I'm strapped on cash, I don't want to be ripped off. I want to be able to get good deals (who doesn't?). If I can get away with enough caps to live a few extra days, I think trading skills for me are a must.
So far, this is it.
Edit: Started a new game. Jim's story still stays but I think I'm keeping his loadout and look for awhile. Cigarettes are bad for you, I know, but I figure something would kill Jim far long before the long term effects come in. Either way, he doesn't expect to live long in a cruel world like this. Call it a survivalist mentality, if you will.
Anyways, some screens of Jim showing off his arsenal and attempting to find a job on the bounty board.
Showing off his Pre-War Service Rifle (M1 Garand. This one chambered for .308 Winchester)
The following screens are a bit graphic (17+ Rated M content. Some gore. You have been warned. Plus, you know....Fallout.).
An NCR Patrol was ambushed by some Viper Gunslingers. Jim managed to take down one.