Paul McCrane กำกับตอนแรกในฤดูกาลใด?ไม่จำเป็นต้องใช้ตารางทั้งหมด
In which season did Paul McCrane first direct an episode?It is not neccessary to use all the tables.
 table_17355820_1:  (season__number [ INTEGER ] directed_by [ VARCHAR) ]
SELECT MIN(season__number) FROM table_17355820_1 WHERE directed_by = "Paul McCrane"