Which movie has the best 5.1 surround mix

Was just wondering which movie has the best example of 5.1 mix (want to really enjoy the new 5.1 system) , it doesnt have to be a HD version of the movie, but which is the best HD version and SD version?

Transformers on HD got 5 stars.

Was just wondering which movie has the best example of 5.1 mix (want to really enjoy the new 5.1 system) , it doesnt have to be a HD version of the movie, but which is the best HD version and SD version?

If you want some of what might be the best HD audio i've ever heard, check out the lossless DtHD tracks on Superman, along with the Matrix trilogy, and also The Chronicles of Riddick(1.5mbps DD+). These movies sound incredible and make a very complete use of all 5.1 channels.

IMHO Transformers has the best sound for DD 5.1.....it rocks the room!

Transformers is good for that, but the Matrix films, especially Matrix Reloaded, is well done too.

Blade Runner really works the home theather.

transformers- this will really give your subwoofer a work out
(the last 45 mintues. my favorite scene is when the camera goes super slow-mo and optimus prime and megatron are colliding on the highway, and also when the one autobot dodges the missiles in the middle of the city at super slow-mo. both are awesome)

batman begins- wonderful use of rears and good dynamics (any fight scene, last 30 minutes)

harry potter and the order of the phoenix- great special effects audio. good dynamics (dumbledore/voldemort fight scene at end)