I, too, thought she was great in the film. It's interesting, when I was in junior high, before I was completely obsessed with broadway, most of my friends were obsessed with Backstreet Boys, N Sync, Britney Spears, etc. And while I wasn't obsessed, my favorite artist back then was Madonna. I remember listening to her CDs a lot and always telling my friends that her singing talent in general I think is overshadowed by her image. Especially when you compare her to some of the above mentioned, I think she has a really good voice.
"If there was a Mount Rushmore for Broadway scores, "West Side Story" would be front and center. It snaps, it crackles it pops! It surges with a roar, its energy and sheer life undiminished by the years" - NYPost reviewer Elisabeth Vincentelli