CREATE TABLE table_24798489_1 (challenge_winner VARCHAR2, original_airdate VARCHAR2)

Who was the challenge winner in the episode that originally aired on January 28, 2009?
SELECT challenge_winner FROM table_24798489_1 WHERE original_airdate = "January 28, 2009"
SELECT "challenge_winner" FROM "table_24798489_1" WHERE "January 28, 2009" = "original_airdate"