I think anything with just a DD (640kbps) track should automatically fall to a tier 3 at best. That goes for Happy Feet, MI trilogy, etc. Theres no way those are in the same category as the lossless Tier 1's mentioned above. The Happy Feet audio stank, and MI:3 is good, but its the same thing on the SD-DVD.
For movies that focus on dialogue, we still need to include and grade the same way. Of course older, catalogue titles like Blazing Saddles is not gonna get high marks, but movies like Prestige and Vacancy are Tier 1 dialogue driven movies. Everything is done right in the audio department and it pays off. I love these soundtracks more than action filled flicks. Are they reference? No. But they are at the top of their game.
Vacancy (LPCM) - Tier 1
Excellent use of surrounds, banging soundtrack in the little action scenes, perfect dialogue. Loved it.
Prestige (LPCM) - Tier 1
Dialogue perfect, surrounds sensational And the electric current, oh yeah!!!
We Were Soldiers (DTS-MA) - Tier 2
Memento (LPCM) - Tier 3
Not the movies fault, just nothing but dialogue really. Good stuff when something does happen though.
Kung Fu Hustle (LPCM) - Tier 1/maybe Tier 2
Everything was good, courtyard fight with musicians is just badass.
Hellboy (LPCM)- Tier 1
Nothing WOWed me, but it was a bangin track throughout
The Fifth Element:Remastered (LPCM) - Tier 0