Kelli O'Hara is brilliant. She is a brilliant musical theater actress. I cannot get enough of this video. This song can easily be taken to a corny place, and is often done dancing around like a loon, which I'll admit totally has its place, and can be wonderful. But she plays the opposite. She's vulnerable. She's weak. She's woozy. She's confused. She's so happy she doesn't know what to do with herself.