Staple (You want these on almost any character (unless you're really into roleplaying), trust me): Scrapper(5 INT), Scrounger(2 LCK), Gun Nut(3 INT), Science!(6 INT), Locksmith(4 PER), Hacker(4 INT) (first 3 points for locksmith and hacker).
Damage: Heavy Gunner(5 STR), Rifleman(2 PER)...