Keener, Craig S.: Revelation: From Biblical Text to Contemporary Life. (The NIV Application Commentary). Zondervan Publishing House: Grand Rapids, Michigan, 2000.
This 576 page commentary features 20+ page introduction, an outline, an annotated bibiography (although the comments are not always especially helpful), a Scripture index, Subject and Author indices, and nothing less than a 16 page index over Other ancient sources.
The references to extra-biblical literature are very helpful, although I doubt whether extra-biblical literature really adds significant insights to Revelation. However, the references allow the readers to check it for themselves.
Another emphasis found in this commentary (as indeed name of the Series indicates) is the contemporary applications.