Here are stills from all 3 TTT trailers (preview after FOTR, teaser, theatrical) that did not end up in the final movie. Maybe in the extended?? Click on the thumbnails for a larger image.

Arwen Faramir Eowyn on the steps of Meduseld Some sort of Uruk-hai camp Aragorn & Gandalf Arwen lying on a bed
Aragorn & Gandalf Someone (Arwen?) approaching the Shards of Narsil Saruman & Grima Saruman Faramir Merry & Pippin with an Orc-head
Aragorn & Arwen Eomer (possibly searching for Theodred) Saruman Saruman & Grima Elrond writing? Arwen running in Rivendell