for my own little project - where do you scrape the trailer info for a movie from IMDB from? I can't make sense of the XBMC xml file in this area, maybe I am too dim for this.

http://www.imdb.com/title/tt0458525/trailers

It is worth noting that IMDB only has movie trailers in some countries

The lines you are interested in are:
<a target="_self" href="/rg/VIDEO_TITLE/GALLERY/video/screenplay/vi3154772761/" onClick="">

The trailer URL would be
http://www.imdb.com/rg/VIDEO_TITLE/GALLERY/video/screenplay/vi3154772761/player

This takes you to the page that links directly to the video, the link to download will look something like:
http%3A%2F%2Fwww.totaleclips.com%2FPlayer%2FBounce.aspx%3Feclipid%3De46293%26bitrateid%3D314%26vendorid%3D102%26type%3D.flv
Replace the codes with:
%3A = ':'
%2F = '/'
%3F = '?'
%3D = '='
%26 = '&'
Leaves you with a link to the file:
http://www.totaleclips.com/Player/Bounce.aspx?eclipid=e46293&bitrateid=314&vendorid=102&type=.flv