Dracula eBook Trailer
http://www.ebooksjustpublished.com/2009/08/07/finally-an-ebook-trailer-that-doesnt-suck/
Tribes Q&A eBook Trailer
http://www.dailymotion.com/video/xhb0s3_entwined-inspirational-ebook-trailer_shortfilms
Entwined eBook Trailer
http://www.youtube.com/watch?v=NRHdoaJnO4U
This eBook Trailer is in another language, but i enjoyed the graphics and typography of it.
Ghostboy and the Nameless Grave eBook Trailer