here is some helpful info from one of my favorite sites--- everything you need to know there.
http://www.avsforum.com/avs-vb/showthread.php?t=1168342
According to that information, the following are in the absolute highest tier of picture quality :
bb nf A Bug's Life Video: AVC | Audio: DTS-HD MA | AR: 2.35:1 | Disney
bb nf Kung Fu Panda Video: AVC | Audio: TrueHD | AR: 2.35:1 | DreamWorks
bb nf Up Video: AVC | Audio: DTS-HD MA | AR: 1.78:1 | Disney
bb nf Coraline Video: VC-1 | Audio: DTS-HD MA | AR: 1.85:1 | Universal
bb nf Ratatouille Video: AVC | Audio: PCM | AR: 2.40:1 | Disney
bb nf Cars Video: AVC | Audio: PCM | AR: 2.40:1 | Disney
bb nf Monsters, Inc. Video: AVC | Audio: DTS-HD MA | AR: 1.85:1 | Disney
bb nf Monsters Vs. Aliens Video: AVC | Audio: TrueHD | AR: 2.39:1 | DreamWorks
bb nf Monsters, Inc. (UK Import) Video: AVC | Audio: DTS-HD MA | AR: 1.85:1 | Disney
bb nf Meet the Robinsons Video: AVC | Audio: PCM | AR: 1.78:1 | Disney
bb nf I, Robot Video: AVC | Audio: DTS-HD MA | AR: 2.35:1 | Fox
bb nf Pirates of the Caribbean: Dead Man's Chest Video: AVC | Audio: PCM | AR: 2.35:1 | Buena Vista
bb nf Pirates of the Caribbean: At World's End Video: AVC | Audio: PCM | AR: 2.40:1 | Buena Vista
bb nf Chicken Little Video: AVC | Audio: PCM | AR: 1.78:1 | Buena Vista
bb nf Open Season Video: AVC | Audio: PCM | AR: 1.85:1 | Sony
bb nf The Wild Video: AVC | Audio: PCM | AR: 1.85:1 | Buena Vista
bb nf Man on Fire Video: AVC | Audio: DTS-HD MA | AR: 2.40:1 | Fox
bb nf Bee Movie Video: AVC | Audio: TrueHD | AR: 1.85:1 | Dreamworks
bb nf Baraka Video: VC-1 | Audio: DTS-HD MA | AR: 2.20:1 | MPI Media
bb nf Tinker Bell Video: AVC | Audio: PCM | AR: 1.78:1 | Disney
bb nf The Host Video: VC-1 | Audio: PCM | AR: 1.85:1 | Magnolia
bb nf Live Free or Die Hard Video: AVC | Audio: DTS-HD MA | AR: 2.35:1 | Fox
bb nf Domino Video: VC-1 | Audio: TrueHD | AR: 2.40:1 | Warner
bb nf Tell No One Video: VC-1 | Audio: PCM 2.0 | AR: 2.35:1 | MPI Media
bb nf Sin City Video: AVC | Audio: DTS-HD MA | AR: 1.85:1 | Disney
bb nf Rocker, The Video: AVC | Audio: DTS-HD MA | AR: 1.85:1 | Fox
bb nf Transporter 3 Video: AVC | Audio: DTS-HD MA | AR: 2.35:1 | Lionsgate
bb nf Red Cliff: The Special Edition (UK Import) Video: AVC | Audio: DTS-HD MA | AR: 2.35:1 | Entertainment In Video
bb nf Youth Without Youth Video: AVC | Audio: TrueHD | AR: 2.35:1 | Sony
bb nf TMNT Video: VC-1 | Audio: TrueHD | AR: 2.40:1 | Warner
bb nf Becoming Jane Video: VC-1 | Audio: PCM | AR: 2.35:1 | Disney
bb nf Pirates of the Caribbean: Curse of the Black Pearl Video: AVC | Audio: PCM | AR: 2.40:1 | Buena Vista
bb nf Dragon Hunters Video: AVC | Audio: DTS-HD MA | AR: 1.78:1 | Phase 4 Films
bb nf Wall-E Video: AVC | Audio: DTS-HD MA | AR: 2.40:1 | Disney
bb nf Bolt Video: AVC | Audio: DTS-HD MA | AR: 1.78:1 | Disney
bb nf Transporter 2 (Japan Import) Video: AVC | Audio: TrueHD | AR: 2.35:1 | Sony
bb nf Corpse Bride Video: VC-1 | Audio: DD | AR: 1.85:1 | Warner
bb nf Chronicles of Narnia, The: Prince Caspian Video: AVC | Audio: DTS-HD MA | AR: 2.35:1 | Disney
bb nf International, The Video: AVC | Audio: TrueHD | AR: 2.40:1 | Sony
bb nf Grand Canyon Adventure: River At Risk (IMAX) Video: VC-1 | Audio: DTS-HD MA | AR: 1.78:1 | Image
bb nf Transformers: Revenge Of The Fallen (IMAX) Video: AVC | Audio: DTS-HD MA | AR: mixed | Paramount
bb nf Sleeping Beauty Video: AVC | Audio: DTS-HD MA | AR: 2.55:1 | Disney
bb nf Happy Feet Video: VC-1 | Audio: DD EX | AR: 2.40:1 | Warner
bb nf Happy Feet (UK Import) Video: VC-1 | Audio: PCM | AR: 2.40:1 | Warner
bb nf Lonely Hearts (Japan Import) Video: AVC | Audio: TrueHD | AR: 2.35:1 | Sony
bb nf Hot Fuzz Proposed Move Video: VC-1 | Audio: DTS-HD MA | AR: 2.35:1 | Universal
bb nf Wallace & Gromit: A Matter of Loaf and Death (UK Import) Video: AVC | Audio: TrueHD | AR: 1.78:1 | 2 Entertain
bb nf Horton Hears A Who! Video: AVC | Audio: DTS-HD MA | AR: 1.85:1 | Fox
bb nf Crank 2: High Voltage Video: AVC | Audio: DTS-HD MA (7.1) | AR: 1.85:1 | Lionsgate
bb nf Fighting Video: VC-1 | Audio: DTS-HD MA | AR: 1.85:1 | Universal
bb nf Watchmen: Theatrical Version (UK Import) Video: AVC | Audio: TrueHD | AR: 2.39:1 | Paramount