CREATE TABLE table_2219961_2 (season__number VARCHAR, nbc_airdate VARCHAR)

How man seasons have the air date of October 2, 2001?
SELECT COUNT(season__number) FROM table_2219961_2 WHERE nbc_airdate = "October 2, 2001"
SELECT COUNT("season__number") FROM "table_2219961_2" WHERE "October 2, 2001" = "nbc_airdate"