Question: What date did the episode with a production code of 4301085 originally air?
SQL: SELECT "Original air date" FROM "1-21172539-1" WHERE "Production code" = 4301085.0;

Question: What date did episode 15 of the season originally air?
SQL: SELECT "Original air date" FROM "1-21172539-1" WHERE "No. in season" = 15.0;

Question: How many items are listed under the column of U.S. viewers for episode "Bite Me"?
SQL: SELECT COUNT("U.S. viewers (millions)") FROM "1-21172539-1" WHERE "Title" = '"Bite Me"';