Office Document Viewer Control
Provide a viewer for viewing office documents (e.g. word, excel and powerpoint basically). The UIWebView in iPhone support serveral formats and give a very good user experiences in some content related apps
I totally support this request. It is a bit weird that iOS provides controls to preview Microsoft(!) Office documents, while Windows Phone development tools don't allow that.
Christopher Snazell commented
I currently have a note taking app on iOS that allows users to clip any kind of file to a note and preview it. The lack of an equivalent to UIWebView on WP7 basically means that the WP7 port of my app will only allow users to preview images.
More information here: http://www.astraea-software.com/ios/iota/