Easter Eggs are hidden items/scenes/bonus features etc. that are hidden on a disc and take some hunting to find. The following discs have Easter Eggs, please feel free to list future findings of your own Easter Eggs or post where the Easter Eggs can be found on these discs.
Blu-ray Discs:
Adventureland
Batman Gotham Knight
The Benchwarmers
Beowulf: The Director's Cut (2007)
Bram Stoker's Dracula
Chronicles of Narnia
Click
Cloverfield
Dan in Real Life
Daredevil
The Dark Knight
Dirty Dancing (20th Anniversary Edition)
The Die Hard Collection
Dodgeball
Elton 60 - Live at Madison Square Garden
Final Fantasy: The Spirits Within
Firefly
The Fly (1986)
The Fountain (UK Version)
Futurama: In the Wild Green Yonder
Ghostbusters
The Golden Compass
Heartbreak Kid (2007)
Hidalgo
High School Musical 3
The Host
I Robot
ID4
The Incredible Hulk
Iron Man
The Italian Job (2003)
Knocked Up
Linkin Park: Road to Revolution - Live at Milton Keyes
Lost: The Complete First Season
Lost: The Complete Second Season
Lost: The Complete Fourth Season
Mission: Impossible - Ultimate Missions Collection
Mission: Impossible III
Monsters Inc.
Nacho Libre
National Treasure: Book of Secrets
No Country for Old Men (second verision) -
Old School
Open Season
Pan's Labrynth
Pineapple Express
Pirates of the Caribbean: Dead Man's Chest
Pirates of the Caribbean: Curse of the Black Pearl
Pirates of the Caribbean: At World's End
The Pixar Short Films Collection: Volume 1
The Proposal
The Punisher
Quarantine
Ratatouille
Resident Evil - The High Definition Trilogy
Resident Evil
Rocky Balboa
The Rundown
Rush Hour 3
RUSH: Snakes & Arrows Live
Rush Hour 3
Saw
Saw IV
Serenity
The Simpsons Movie
Sky Captain and the W.O.T.
Sleeping Beauty
Sling Blade
Smart People
Spider-Man: The High-Definition Trilogy
Spider-Man 3Star Trek:TOS Season 1
Star Trek: TOS Season 1
Step Up 2: The Streets
Surf's Up
Superbad
Terminator 2: Judgment Day
Transformers (2007)
Transformers - Revenge of the Fallen
Underworld - Rise of the Lycans
Unfaithful
UP
Wall*e
Wanted
Wild Hogs
X-Files: I Want to Believe