CREATE TABLE table_27999 ("Episode #" FLOAT, "The W\\u00f8rd" TEXT, "Guest" TEXT, "Introductory phrase" TEXT, "Original airdate" TEXT, "Production code" FLOAT)

Who were the guests on a show where the production code is 6152?
SELECT "Guest" FROM table_27999 WHERE "Production code" = '6152'
SELECT "Guest" FROM "table_27999" WHERE "Production code" = '6152'