CREATE TABLE "table1_2108684_1" (
  "episode" text,
  "broadcast_date" text,
  "run_time" text,
  "viewers_in_millions" text,
  "archive" text
);

Question: What is the run time for the episode with 7.9 million viewers?
SQL: SELECT "run_time" FROM "table1_2108684_1" WHERE "viewers_in_millions"='7.9';

Question: What episode had a run time of 23:38?
SQL: SELECT "episode" FROM "table1_2108684_1" WHERE "run_time"='23:38';

Question: How many million viewers watched the episode with a run time of 25:22?
SQL: SELECT "viewers_in_millions" FROM "table1_2108684_1" WHERE "run_time"='25:22';