ANGELS & DEMONS teaser trailer

The teaser trailer for ANGELS & DEMONS is online, the prequel to THE DA VINCI CODE (which might account for why Tom Hank's hair is shorter) which is again directed by Ron Howard from an Akiva Goldsman screenplay. Having read both novels, it's fair to say that ANGELS & DEMONS is more superior and brings up better philosophical debates but at their core, they share the same beats and rhythms. The teaser trailer is very shot and only briefly shows actual footage from the film. It may also feature the first twist unveiling of a villain voice over narrator in movie history. Can anyone else come up with an example of where this has happened before?