Update: Forum member TooMuchDew sent over a bunch of links to the PDF files for all 8 of the LEGO Harry Potter movie posters:
Links to PDF Posters for Movies 1-6 are here:
http://harrypotter.lego.com/en-us/downloads/default.aspx
I did some a Google advanced search within the domain:
http://cache.lego.com/upload/contentTemplating/HarryPotterDownloads/otherfiles/
actual search:
http://www.google.com/advanced_search?q=site:http://cache.lego.com/upload/contentTemplating/HarryPotterDownloads/otherfiles/&hl=en&lr=&biw=1280&bih=909&prmd=ivns
and found the PDF files for all 8 movie posters (7.1 and 7.2 are bottom 2 links in search)
LEGO Harry Potter 7 - 'Deathly Hallows Part 1' movie poster:
http://cache.lego.com/upload/contentTemplating/HarryPotterDownloads/otherfiles/downloadB04DD0CF847688B1EE40B3BBEE7A9852.pdf
and LEGO Harry Potter 7 - 'Deathly Hallows Part 2' movie poster
http://cache.lego.com/upload/contentTemplating/HarryPotterDownloads/otherfiles/download021C3582C181546DB64C70424167DA50.pdf
There may have been some legitimate way of arriving at the posters as a reward for playing an online Harry Potter LEGO game but I didn't bother checking.
Enjoy!
flickr-user Okay Yaramanoglu (okayaraman) uploaded some Harry Potter movie posters stylized with LEGO minifigures in place of the actors. He CLAIMS to have gotten them from the LEGO website, but I couldn't find them on there, so he may just be lying.
Or I fail at the internet.
Deathly Hallows Part I movie poster above, Part II below. Pro is not enabled for his account; hopefully, he can comment on the forum thread and link to the original size.
Thanks, Okay!
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Permalink: http://www.fbtb.net/2011/08/02/harry-potter-and-the-deathly-hallows-movie-posters-lego-fied/
I actually got them from Brickipedia, but I knew they were from the website. Thanks for the links, TooMuchDew. Ace, do you still need me to give you deeplinks?