Love, love, LOVE into the woods.
I'm one of those people obsessed with Audrey. My Fair Lady is just stunning and THE COSTUMES simply to die for.
I must say I'm seriously disappoint by the amount of people saying Wicked and Phantom. I mean they're ok but they're hardly outstanding stage productions or films, just light entertainment...
Other ones that have to be up there for me are Fame, Guys & Dolls, Gypsy, The King and I, High Society, Hair, Evita, Chorus Line, Annie Get Your Gun, South Pacific, Fiddler On The Roof, Singing in the Rain, 7 Brides for 7 Brothers, White Christmas
There are many more I love but then we'd be here forever.
Nothing beats West Side Story though. One of the most stunning creations to ever exist I think.