CREATE TABLE table_26493520_3 (rank_on_channel VARCHAR2, original_air_date VARCHAR2)

Name the rank on channel for january 21, 2011
SELECT rank_on_channel FROM table_26493520_3 WHERE original_air_date = "January 21, 2011"
SELECT "rank_on_channel" FROM "table_26493520_3" WHERE "January 21, 2011" = "original_air_date"