Here is a pic of the Helen Hayes theatre: http://render1.snapfish.com/render2/is=Yup6aQQ%7C%3Dup6RKKt%3Axxr%3Do-qpDlfX7RPfr%3DUofrj7t%3DzrRfDUX%3AeQaQxg%3Dr%3F87KR6xqpxQPJoxPoPxP0lxv8uOc5xQQQaJQJPGQPeGqpfVtB%3F*KUp7BHSHqqy7XH6gXeQo%7CRup6lQQ%7C/of=50,590,442
Sometime later this season Idina Menzel will guest star on Private Practice. I do not usually watch this show, but it may be interesting to see her in it. http://www.tvguide.com/News/Private-Practice-Menzel-1002685.aspx
When I saw Wicked a few years ago William Youmans played Dr. Dillamond and Sean McCourt played the witch's father. But that was back in 2005 so they could have changed how they casted.