CREATE TABLE "table1_24725951_1" (
  "episode" real,
  "stage" text,
  "celebrities" text,
  "directed_and_produced_by" text,
  "original_airdate" text,
  "viewers_overnight_estimates" text
);

Question: How many episodes had celebrity guest stars Frank Skinner and Lee Mack?
SQL: SELECT COUNT("episode") FROM "table1_24725951_1" WHERE "celebrities"='Frank Skinner and Lee Mack';

Question: List episode directed and produced by Karen Selway?
SQL: SELECT "episode" FROM "table1_24725951_1" WHERE "directed_and_produced_by"='Karen Selway';

Question: Which episode had celebrities Nick Hewer and Saira Khan in them?
SQL: SELECT "episode" FROM "table1_24725951_1" WHERE "celebrities"='Nick Hewer and Saira Khan';

Question: List the director and producer when Nick Hewer and Saira Khan were starring.
SQL: SELECT "directed_and_produced_by" FROM "table1_24725951_1" WHERE "celebrities"='Nick Hewer and Saira Khan';

Question: List directors and producers when the celebrities involved were Bill Turnbull and Louise Minchin.
SQL: SELECT "directed_and_produced_by" FROM "table1_24725951_1" WHERE "celebrities"='Bill Turnbull and Louise Minchin';