MungerT WAS RELUCTANTLY THAT ANDREW LEEKA traveled the fearsome freeways, right through the writhing core of Los Angeles, to meet with the hoard of directors of Good Samaritan Hospital regarding the position of president. The traffic wasn't what worried Leeka.Good Samaritan is one of Los Angeles' oldest and most relied upon hospitals and although Good Sam had a reputation in the Southern California medical community for delivering quality care, it also was known for having constant financial problems and high turnover among staff and management. In fact, recalled Leeka, contention and disorganization were such that, "This place was like Bosnia."Part of the problem, Leeka's contacts told him, was chairman of the board Charles T. Munger, who held an executive committee meeting every few weeks and gave the chief administrator very little peace. Nevertheless, following his heart more than his head, Leeka reported to a small conference room on the hospital's first floor, where the executive committee had gathered.