Hybrid:

• 300 (2006)
  
• Apollo 13 (1995)
  
• Batman v Superman: Dawn of Justice (2016) [IMAX Edition]
  
• Bourne Identity, The
  
• Broken Arrow (1996) – Cinema Polish
  
• Casino - in progress
  
• Cell, The
  
• Chronicles of Riddick, The
  
• Dark Knight, The
  
• Departed, The (2006)
  
• Fear and Loathing in Las Vegas (1998)
  
• Girl with the Dragon Tattoo, The (TV version)
  
• Gladiator
  
• Good Year, A (2006)
  
• In Bruges (2008)
  
• Iron Man
  
• Jurassic World (2015)
  
• Limitless (2011)
  
• Martian, The (2015)
  
• Oblivion (2013)
  
• Pirates of the Caribbean: Dead Men Tell No Tales (2017)
  
• Quest, The - in progress
  
• Ronin (1998)
  
• Showgirls (1995)
  
• Siege, The (1998)
  
• Taxi 3 - in progress
  
• Terminator 2 (1991) - custom open matte, experimental
  
• Watchmen (2009) - custom open matte, experimental
  
• Waterworld (1995) - in progress
  

UAR:

• Alien 3 - 1.78:1+2.35:1 - preliminary test, small image added
  
• Alien: Resurrection - 1.78:1+2.35:1 - advanced test, added image also on both sides
  
• Arrival, The (1996) - 1.33:1+1.85:1 - advanced test, maybe ends up in a fullscreen hybrid version
  
• Creep (2004) - 1.78:1+2.35:1 & custom color grading - in progress
  
• Dark Tower, The (2017) - 1.78:1+2.35:1 - preliminary test
  
• Deep Rising - 1.78:1+2.35:1 - advanced test
  
• Harry Potter and the Order of the Phoenix - preliminary test
  
• Iron Man - 1.78:1+2.35:1 - released
  
• Jurassic Park III (2001) - 1.33:1+1.78:1 - preliminary test
  
• Matrix, The (1999) - 1.33:1+1.78:1+2.40:1 - new color grading, in progress
  
• Matrix, The (1999) - 1.33:1+1.78:1+2.40:1 - old color grading, test version released
  
• Resident Evil (2002) - 1.33:1+1.78:1 - SD test version released, HD in progress
  
• Resident Evil: Afterlife (2004) - 1.33:1+1.78:1 - preliminary test
  
• Resident Evil: Apocalypse (2010) - 1.78:1+2.35:1 & custom color grading - in progress
  
• Silent Hill (2006) - 1.78:1+2.35:1 & custom color grading - in progress
  
• Terminator 2 (1992) - 1.33:1+2.35:1 - preliminary test
  
• Terminator 3 (2003) - 1.33:1+1.78:1 - advanced test
  

VAR:

• Alien: Covenant — 1.78:1/2.35:1 — [Fundamental Collection]
  
• Bad Education (2004) — 1.85:1/2.40:1
  
• Biutiful (2010) — 1.78:1/2.40:1
  
• Brainstorm (1983) — 1.66:1/2.40:1
  
• Brother Bear (2003) — 1.75:1/2.40:1
  
• Dark Knight Rises, The (2012) — 2.40:1/1.78:1
  
• Dark Knight, The (2008) — 2.40:1/1.78:1
  
• Enchanted (2007) — various
  
• Galaxy Quest (1999) — 1.33:1/2.40:1
  
• Grand Budapest Hotel, The (2014) — various
  
• Guardians of the Galaxy (2014) — 2.40:1/1.78:1
  
• Horse Whisperer, The (1998) — 1.85:1/2.40:1
  
• Hunger Games, The: Catching Fire (2013) — 2.40:1/1.78:1
  
• Incredibles, The (2004)
  
• JFK (1991)
  
• Life of Pi (2012)
  
• Mad Max 2: The Road Warrior
  
• More American Graffiti (1979) — 1.33:1/1.85:1/2.40:1
  
• Oz the Great and Powerful (2013) — 1.33:1/2.40:1
  
• Paddington (2014)
  
• Prometheus (2012) — 1.78:1/2.35:1 — [Fundamental Collection]
  
• Scott Pilgrim vs. the World (2010) — 1.66:1/1.85:1/2.40:1
  
• Serious Man, A (2009)
  
• Seventh Son (2015)
  
• Simpsons Movie, The (2007) — 1.33:1/2.40:1
  
• Star Trek Into Darkness (2013) — 2.40:1/1.78:1
  
• Star Wars: The Force Awakens (2015) — 2.39:1/1.78:1
  
• Superman: The Movie (1978)
  
• This Is Cinerama (1952) — 1.33:1/2.60:1
  
• This Is the End (2013)
  
• THX-1138 (1971)
  
• Tombstone (1993)
  
• Transformers: Age of Extinction (2014) — various
  
• Transformers: Revenge of the Fallen (2009) — 2.40:1/1.78:1
  
• Tron: Legacy (2010) — 2.40:1/1.78:1
  

List updated on: 2018-12-29

Note: hybrid and UAR do not exist as official releases

Hybrid Vs UAR - a simple guide
Making Sense of New Movies That Change Aspect Ratios
THE LETTERBOX HERESIES OR: HOW I LEARNED TO STOP WORRYING AND LOVE PAN & SCAN

The T2 and Matrix projects are the ones I'm most interested in.

Are you listing the hybrids as "already created" or "planning to create myself"?

This is a list that would try to include every hybrid and UAR projects; many hybrids are made by random.next; UAR seems to be intersting only for me...

any interest in doing The Abyss?

There are three versions in the wild, the 2.35:1 AR, the open matte 1.78:1 HD version and a fullscreen 1.33:1 on DVD

I can provide DVD ISO's for Apollo 13 fullscreen 1.33:1 and the IMAX cut which was framed at 1.66:1 if needed?

The IMAX cut is missing 24 mins of footage though

The Abyss: made some quick-n-dirt comparisons, and it seems letterbox has just a tiny fraction more of image on the sides, in comparison to open matte, while fullscreen has quite much more on top and/or bottom; so, I'd go with a "mere" UAR using open matte and fullscreen.

Apollo 13: I thought about this, too. I'm aware of IMAX, another reason to use two sources here too. Actually, I'm stuck with the fullscreen version on myspleen, no seeders since days...

Because there is some interest in UAR projects, but many don’t know how they will look like, I thought to compile a list of screenshot comparisons, so everyone will be able to take a look!

EDIT: as the previous links posted on screenshotcomparison.com were all broken, due to problems with the site, I decided to post old and new comparisons here: https://fanrestore.com/thread-2105.html

Very interesting list, I'd be interested in more than a few of those and just to throw another title that deserves some love in the air, The Postman 1997, though I am not certain if there are different ratio sources.
I've mentioned it to you before sporv, it's a damn decent film, but the bluray image is an abomination, it's as bad as the Ravenous and Secret Window bd's.

All the screenshots are now offline. I myself love it when you expand the frames to get the most image!