CREATE TABLE table_21183 ("Show" TEXT, "Last Aired" FLOAT, "Previous Network" TEXT, "Retitled as/Same" TEXT, "New/Returning/Same Network" TEXT, "Returning" TEXT)

Which show as previously on The Family Channel?
SELECT "Show" FROM table_21183 WHERE "Previous Network" = 'The Family Channel'
SELECT "Show" FROM "table_21183" WHERE "Previous Network" = 'The Family Channel'