(see main site (http://www.movie-list.com/trailers.php?id=thischristmas), or) AOL/Moviefone Quicktime domestic trailer direct links:
lo-res (14.4MB): http://pdl.stream.aol.com/aol/us/moviefone/movies/2007/thischristmas_031192/thischristmas_trlr_01_700_dl.mov
hi-res (30.7MB): http://pdl.stream.aol.com/aol/us/moviefone/movies/2007/thischristmas_031192/thischristmas_trlr_01_1500_dl.mov
480p (31.5MB): http://pdl.stream.aol.com/aol/us/moviefone/movies/2007/thischristmas_031192/thischristmas_trlr_01_480p_dl.mov
720p (64.4MB): http://pdl.stream.aol.com/aol/us/moviefone/movies/2007/thischristmas_031192/thischristmas_trlr_01_720p_dl.mov
1080p (154MB): http://pdl.stream.aol.com/aol/us/moviefone/movies/2007/thischristmas_031192/thischristmas_trlr_01_1080p_dl.mov

(I wonder if anyone else is having problem with playback of the 1080p trailer using QT MoviePlayer. It always crashes around 1:32 saying buffer overrun. Then again I don't have 'powerful hardward [sic] to play back the file' and Moviefone's HD encodes are always ridiculously high with bitrates.)

Same problem with QuickTime Alternative.
That 1080p looks like crap anyway ...

Quicktime HD encode of domestic trailer from Yahoo (at last):
480p (50.6MB) http://playlist.yahoo.com/makeplaylist.dll?sid=47267336&sdm=web&pt=rd
720p (130MB) http://playlist.yahoo.com/makeplaylist.dll?sid=47267337&sdm=web&pt=rd
1080p (176MB) http://playlist.yahoo.com/makeplaylist.dll?sid=47267339&sdm=web&pt=rd