When the new Fox show “Glee” (Fox Wednesdays at 9/8 c) had a special sneak preview premiere in the spring, many television critics loved it. It had a unique and exciting premise, quirky characters and a spirit of fun and outlandishness that is often missing in contemporary comedy shows. With its musical interludes, it also seemed like a great addition to the Fox schedule that will soon, once again, include the hit reality show “American Idol.” Unfortunately, the first three new episodes of “Gle