Nothing could prepare fans of the collegiate drama for its season 2 shocker: Felicity (Keri Russell) — the coed with the luxuriant, curly tresses — was shorn within mere inches of a cue ball. Suddenly, the question that had seemed so important — Ben or Noel? — took a backseat to What on earth can we do to get her hair back? Ratings for the 1999-2000 season took a hit — though time-slot changes likely had more to do with them than Russell's new 'do. But the negative reaction was so strong, The WB's then entertainment president Susanne Daniels (half) jokingly told reporters: ''Nobody is cutting their hair again on our network.''