The upcoming Sony Pictures release of 'Memoirs of a Geisha' will have a new indexing feature that will be used for the first time on a Blu-ray movie. In order to easily navigate the extras, a "Disc Navigation Index" is provided so that clips on a particular subject are shown from across multiple supplements. No word as to if a similar feature is being prepared for any future releases.
Another exclusive feature - "Blu-Wizard" - was used on the 'Black Hawk Down' release, and never used since. Similar to the "Disc Navigation Index", it allows the viewer to customize how they view supplemental features.