The first two tiers of Blu-ray from AVS (titles in order of quality). Use this list to find which movie to get in order to demo for friends:
TIER 0 -Blu-
Completely flawless picture. No artifacts whatsoever, no matter how small. Demo Material - These show just what Blu-Ray is all about and everyone should own one to show any guests in their home. Show someone one of these films and they'll want to join the Blu side
Pirates of the Caribbean: Dead Man's Chest (PCM)
Corpse Bride
TIER 1 -GOLD-
Demo Material, but minor artifacting may be present which the untrained eye may not necessarily spot. Little if any visible compression. Sharp image that has a lot of HD-POP effects. If you are thinking about buying a movie in this tier don't hesitate. Show someone one of these films and they'll want to join the Blu side
Chicken Little (PCM)
Open Season (PCM)
TMNT
Apocalypto (PCM)
Black Snake Moan
Crank (PCM)(IME)
The Messengers
The Host
Pirates of the Caribbean: Curse of the Black Pearl (PCM)
The Fifth Element (PCM) (Remastered)
The Patriot
Happy Feet
Battle of The Bulge
The Wild (PCM)
The Ant Bully
A Scanner Darkly
Curse of the Golden Flower
300
Final Fantasy: The Spirits Within
Happily N'Ever After
Black Hawk Down (BW)(PCM)
Kingdom of Heaven (MA)
Roving Mars (This documentary includes some SD 4:3 shots which resulted in lower placement. HD Quality is top of tier one, however due to SD and feedback this film is placed lower).
Complete list here:
http://www.avsforum.com/avs-vb/showthread.php?t=858316