Augustes

I can only think of one that was 16X9 and that was the TV teaser for Peter Jackson's 'King Kong'

All other trailers notably, the ones for the upcoming 'Poseidon' are windowboxed so severly, that any sort of excitement is considerably diminished.

I would assume this will change in the future, but I find it odd that while some adds are full 16X9, and some pillar-boxed, Hollywood hasn't jumped on the trend to use 16X9 aspect ratio to a film's visual advantage.