NBC has been running near-constant promos for "Grease: You're the One That I Want," the reality show where America votes on who will play Sandy and Danny in an upcoming Broadway production of "Grease." The first episode, a special 90-minute version, airs tonight (Sunday) at 8 p.m., with Olivia Newton-John as a guest star. I still can't decide whether it's going to be so bad it's good — or just Read more