British funnyman Ricky Gervais insists he will tread with caution over plans for new episodes of TV show EXTRAS - as he would hate it to fall victim to "the curse of the third series". The star doesn't want to disappoint fans of the show by making a sub-standard follow-up to the previous two series, and plans to let Extras go out on a high note. He says, "We are always let down by a third season of something we like. "I won't say never, but probably not."