CREATE TABLE table_26664 ("Episode" FLOAT, "Broadcast Date" FLOAT, "BBC One Presenter ( s ) " CLOB, "Starring" CLOB, "Radio 1 Presenter" CLOB, "Viewers  ( millions ) " CLOB)

Who starred in episode 3?
SELECT "Starring" FROM table_26664 WHERE "Episode" = '3'
SELECT "Starring" FROM "table_26664" WHERE "Episode" = '3'