The lead in Next to Normal is complex: Diana suffers from bipolar disorder. She's intelligent and funny, but also self-pitying and sometimes nasty as hell. Margie Lamb gave us all the character's complexities in one prickly, scintillating package. She wasn't afraid of being unlikable when necessary, but she also made the audience pity and understand Diana's suffering. Lamb also unleashed a fine, supple voice that was easily up to the difficult score.