High-definition versions of the US full trailer. Links should be downloadable, just 'right-click, save-as'. Unfortunately, since the trailer is hosted by yahoo it's possible that it doesn't work for everyone. But it should work with IE and most download managers. Usually, the link should transform itself into a file like '36100857.mov'. If you just get a file named 'makeplaylist.dll' but it has the size as labelled above after the download is finished then just rename it as a file ending with '.mov' like 'Potter5_FTW.mov'. If the download ends immediately with just a very small file on your hard drive then I'm afraid it doesn't work for you.
Trailer will be shown in the US in theatres before Spider-Man 3.
Harry returns for his fifth year of study at Hogwarts and discovers that much of the wizarding community has been denied the truth about the teenager's recent encounter with the evil Lord Voldemort. Fearing that Hogwarts' venerable Headmaster, Albus Dumbledore, is lying about Voldemort's return in order to undermine his power and take his job, the Minister for Magic, Cornelius Fudge, appoints a new Defense Against the Dark Arts teacher to keep watch over Dumbledore and the Hogwarts students.