T2
Brazil
Ben Hur
Gone With the Wind
The Ten Commandments
The Wild Bunch
The Good, the Bad, and the Ugly
The Searchers
Office Space
Almost Famous
Apocalypse Now
Army of Darkness
Evil Dead
Evil Dead 2
Young Frankenstein
Blazing Saddles
LOTR: First 2
Natural Born Killers
Portrait of Jennie
Raging Bull
Trainspotting

Good catch....just a typo, I'm afraid.

Boogie Nights
Scarface
Half Baked
Carlitos Way
Goodfellas
Revenge of the Nerds
Porky's
Reservior Dogs
Pulp Fiction
Showgirls
Office Space
Clerks
Swingers
True Romance

Mostly upgrade to SE or better copies w/ 16x9 enhancement.

Alien series -> Quadrilogy
Armageddon -> Criterion
Beastmaster -> SE
Blues Bros -> 25th Ann.
Candyman -> SE
Clerks -> X
Die Hard -> Ultimate Coll
Event HOrizon -> SE
Frighteners -> DC (kept both)
Ghostbusters -> 2 pack
Gladiator -> DC (kept both)
Godillze -> ME
Hellboy -> DC (kept both)
Iron Giant -> SE
The Thing -> 16x9
They Live! -> 16x9
King Kong -> DC (kept both)
Mallrats -> 10th ann.
Mothman Prophecies -> SE
Elm St -> SE (kept both)
Payback -> Straight Up (kept both)
Predator 1 & 2 -> SEs
Punisher -> EC
Res Dogs -> 15th Ann
Romacing Stone / Jewel Nile -> SE 16x9
Saw 1-2 (and hopefully 3) -> unrated (kept both)
Silence lambs CC -> SE (kept both)
Spaceballs -> SE
Star Trek 2-10 -> CE
Star Wars 4-6 -> LE
Starship Troopers -> SE
T2 UE -> EE (kept both)
TCM original -> UE
Transformers -> 20th Ann
Tremors -> 16x9 attack pack
Tron -> 20th Ann
Matrix -> Ultimate coll
War of the Worlds -> CE
Wedding Singer -> TAE
xxx -> Unrated

Coming soon: Flash Gordon, Dark Crystal, Labryrinth, Robocop

Fellowship of the Ring
Hard Boiled
King Kong vs Godzilla
Nero Wolfe: Season 1
Serial Experiments: Lain
Star Trek: Insurrection
Star Trek: Nemesis
Tron

I've only double-dipped once: Dazed and Confused (Flashback Edition and Criterion). Fortunately, the Criterion one was a gift.

The Wild Bunch (part of the Peckinpah collection)
The Sand Pebbles (just ordered the Roadshow version)
Heat

Usually by the time I get around to getting a title, there's a pretty good version out there and I don't double dip for minor enhancements. I will probably upgrade my Die Hard disks since I have the original non-anamorphic versions of all three films.

Dude, have you not seen these threads yet? its a great reference

Top Gun
National Lampoon's Vacation, Christmas Vacation, Vegas Vacation
Rain Man
The Fugitive
A Christmas Story

I think that's all

Terminator 1 and 2
Lord of the Rings
Alien
The A-team
Gladiator
Kill Bill- bought the region 1 versions of the films then bought the regions 3 versions.

FF Extended Edition is well worth it and includes the theatrical version. the docs for the FF4 comic and Jack Kirby were awesome.

Se7en-replaced flipper
Silence of the Lambs-upgraded to the SE
Lord of the Rings-FOTR- got the theatrical for a gift, but still got the EE, held out for EE on the others
Gladiator-had to get the extended edition

That's all I can think of off the top of my head. I generally won't upgrade unless the new release is an extended cut, or the original release was flipper or non-anamorphic etc.

Don't care about new packaging, new extras that I won't watch anyway etc.

Shawshank Redemption - One of my favorites. Grabbed the SE when I got it for $4 due to a price error at BB
Star Trek: Nemesis - Ashamed to say I have two of this. But I wanted all of the SE for Trek. Got it for FREE in a BOGO.

LOTR - Upgraded from theatrical to extended on all 3 films. (though I'm not sure that counts as a DD.)

The Good, The Bad, and the Ugly - Upgraded from the Man with No Name Trilogy to the SE.

Superman: The Movie - Stand alone film to the Ultimate Collection



That's it! Not too shabby.

I forgot to add Traffic to my list, bought the 1 disc for $5 on clearance then bought the Criterion

I'm not a big fan of double dipping. Just the following:

Batman
Batman Returns
Donnie Darko

Batman movies for the improved transfers and the extras.

Donnie Darko for the directors cut. I've had it since it came out and still haven't watched it. It's the only dvd not purchased in the last two weeks I haven't watched.

A lot of mine are upgrading from non-anamorphic/shitty releases, but I am a sucker for special features (ESPECIALLY commentaries), so I will usually upgrade.

Double Dips
12 Monkeys (wanted documentary and DTS version)
Alien (Quadrilogy)
Alien Resurrection (Quadrilogy)
Alien³ (Quadrilogy)
Aliens (Quadrilogy)
Angel Heart
Apollo 13
Back to the Future (R4 + R1)
Back to the Future: Part II (R4 + R1)
Back to the Future: Part III (R4 + R1)
Candyman
Carlito's Way
Casino
Clear and Present Danger
Clerks X: 10th Anniversary Edition
Con Air
Dazed and Confused
Dumb And Dumber
Dune: EE
Eerie Indiana: The Complete Series
Field of Dreams
Frank Herbert's Dune
Gladiator
Groundhog Day
Highlander
Hoosiers
John Carpenter's Escape from New York
Léon: The Professional
Mallrats
Manhunter - Restored Director's Cut
Mean Streets
Memento
Men in Black
Napoleon Dynamite - Flippin' Sweet Collector's Set (Had to have the bobble heads)
Office Space
Oldboy
Patriot Games
Planet Of The Apes - 1968 (Ape head)
Planet Of The Apes - 2001 (Ape head)
Predator
Quantum Leap: The Complete Second Season (Bought R2 unedited, sold R1)
Quantum Leap: The Complete Third Season (Bought R2 unedited, sold R1)
Rain Man
Reservoir Dogs: Ten Years - Mr. White
Resident Evil
Robin Hood: Prince of Thieves
Robocop
Rocky
Rocky II
Rocky III
Rocky IV
Rocky V
Scarface
Spaceballs
Star Trek II: The Wrath of Khan
Star Trek III: The Search for Spock
Star Trek IV: The Voyage Home
Star Trek V: The Final Frontier
Star Trek VI: The Undiscovered Country
Star Trek: First Contact
Star Trek: Generations
Star Trek: Insurrection
Star Trek: Nemesis
Star Trek: The Original Series: The Complete First Season (Had a few of the 2-episode original releases)
Stir of Echoes
Supergirl
Terminator 2: Judgment Day
The Animatrix (Matrix Neo Bust collection)
The Dark Crystal
The Dead Zone (R2 SE)
The Dead Zone: The Complete First Season (Had the pilot episode)
The Good the Bad and the Ugly
The Hunt for Red October
The Killer
The Matrix (Matrix Neo Bust collection)
The Matrix Reloaded (Matrix Neo Bust collection)
The Matrix Revolutions (Matrix Neo Bust collection)
The Outer Limits: The New Series: Season 1 (Had a couple of the selected releases)
The Princess Bride
The Running Man
The Shawshank Redemption
The Shining
The Silence of the Lambs
The Sting
The Twilight Zone: The Definitive Edition - Season 1
The Twilight Zone: The Definitive Edition - Season 2
The Twilight Zone: The Definitive Edition - Season 3
The Twilight Zone: The Definitive Edition - Season 4
The Twilight Zone: The Definitive Edition - Season 5
The X-Files Mythology: Vol. 1: Abduction
The X-Files Mythology: Vol. 2: Black Oil
The X-Files Mythology: Vol. 3: Colonization
The X-Files Mythology: Vol. 4: Super Soldiers
Total Recall
True Romance
Underworld: Unrated
X-Men 1.5

Triple Dips
Evil Dead 2: Dead By Dawn (Tin, Book of the dead and R2 set)
The Evil Dead (LE, Book of the dead and R2 set)
The Evil Dead 3: Army of Darkness (SE, R3, and R2 set)
The Fifth Element (Original, SE, and R2)
Tommy Boy: Holy Schnike Edition - Best Buy Exclusive (had to have bobble head, already had original release and SE)

My list is probably similar to Numes'. I'm a sucker for new features.

Reservoir Dogs
Clerks
League of Their Own
Office Space
Philadelphia
Resident Evil
Truman Show
X-Men
Young Guns
Parenthood
American Psycho

A Christmas Story -> 20th Anniversary Edition
Alien: 20th Anniversary Edition -> Collector's Edition (kept both)
The Big Lebowski -> Collector's Edition
Clerks -> Clerks X
DareDevil: 2-Disc Edition -> Director's Cut (kept both)
Dazed And Confused: Flashback Edition -> Criterion Collection (kept both)
Donnie Darko -> Director's Cut (kept both)
Empire Records -> Remix! Special Fan Edition (kept both)
Ferris Bueller's Day Off: Bueller...Bueller Edition (kept both)
Halloween: THX -> 25th Anniversary Edition -> Limited Edition (kept 25AE & LEs)
Goldeneye -> James Bond Ultimate Collection Vol. 3
Goldfinger -> James Bond Ultimate Collection Vol. 1
Léon: The Professional: Uncut International Version -> Deluxe Edition
Mallrats: Collector's Edition -> 10th Anniversary Edition (kept both)
The Mask Of Zorro -> Deluxe Edition
Monty Python & The Holy Grail: Special Edition -> Extraordinarily Deluxe Edition
National Lampoon's Vacation -> 20th Anniversary Edition
Office Space -> Special Edition
Platoon: Special Edition -> 20th Anniversary Edition
The Princess Bride: Special Edition -> Dread Pirate Edition
Reservoir Dogs: 10th Anniversary Edition -> 15th Anniversary Gas Can Edition (kept both)
Stripes -> Extended Edition
Superman: Special Edition -> 4-Disc Deluxe Edition
Superman II: -> Special Edition -> The Richard Donner Cut (kept SE & Donner Cut)
Terminator 2: Judgement Day: Ultimate Edition -> Extreme Edition (kept both)

Hmm, I expected more, honestly...

Not TOO many, but

Serenity (SD and HD-DVD)
Pan's Labyrinth (US and Korean (SP) releases)
Reno 911 (3rd season, bought second set by mistake, it was on sale for $10)
Boondock Saints (rated and unrated versions)
Dogma (regular and SE versions)
Fear and Loathing in Las Vegas (regular and Criterion versions)
Manchurian Candidate (1962) (regular and SE)
Seven Samurai (both Criterion releases, worth every penny for the upgrade)
The Usual Suspects (regular and SE)