Giddy for GLEE

I started the season rooting for "Glee." Now I've become one of its giddiest cheerleaders. Why the pumped-up enthusiasm? Because Fox's rookie series, which first appeared to be a cute novelty act -- teenage misfits breaking into song-and-dance-routines -- has grown into TV's most heartbreaking hour, playing your emotions like a severe case of puppy love.

It's done so by turning its attention away from the main character, an earnest glee-club instructor who could have been recruited straight from the "Room 222" faculty, and focusing on the supporting cast made up of complicated, compelling youngsters in desperate need of a hug -- and a solo.

The show reaches its full potential Wednesday night with the episode "Wheels," a roller-coaster ride that will have you humming one minute and sobbing the next. Anyone providing too many details should go straight to detention, but for those who simply can't wait, we'll let you peek at the cheat sheet.

Jane Lynch has been brilliant but one-dimensional as the militant cheerleading coach. Now she exposes a soft side that will keep her from being crowned dictator of the year but brings her one step closer to an Emmy. Chris Coffer, who plays gay-pride poster boy Kurt as if he's always on the verge of either laughing or crying, has some unforgettable scenes with his single, homophobic father, played beautifully by sitcom veteran Mike O'Malley, who is now officially forgiven for "Yes, Dear." Artie and Tina come oh-so close to locking lips, until something happens that's more disruptive than a sudden breakout of acne.

Then there are the musical numbers.

My biggest criticism of early episodes is that the song selection has leaned toward the predictable. Yes, "Don't Stop Believin'" is a catchy tune, but it should have been retired from the TV playlist the moment Tony Soprano punched it up on the jukebox. Fortunately, the show has slowly gravitated toward more obscure numbers and unexpected arrangements.

After you hear Artie's bluesy version of "Dancin' With Myself," performed as he rolls through the empty halls in his wheelchair, you'll be convinced that Billy Idol should write a Broadway musical. The real showstopper is a diva showdown of "Defying Gravity," a ballad from "Wicked." No dance steps, no fancy camera work, just two ultra-talented singers pouring it on.

It's an anthem that could describe the entire series, one that's soaring above the fray with bold, elegant strokes. Haven't seen an episode yet? No worries. Wednesday's effort provides the perfect opportunity to join the pep rally.

njustin@startribune.com • 612-673-7431