The obvious one would be The Leopard.
Then, at current time :
Amarcord
Beauty and the Beast
High and Low
Diabolique
The Wages of Fear
Yojimbo / Sanjuro
The Third Man
8 1/2 (it's more a different restoration than really an upgrade)
In the Mood for Love (new 4K restoration just announced, I have no idea how it looks)
3 Women (with a debatable new color scheme)
The Battle of Algiers
Harakiri (though I believe in this case, the restoration was already available but Criterion chose to re-use their own HD master instead)
The Man Who Fell To Earth (sadly not really an upgrade)
Au revoir les enfants
Late Spring
The Earrings of Madame de (the backlash on the Criterion release was so bad Gaumont had to postpone their own release to have the restoration re-done - and the BFI then managed to top it again by having the non-degrained master)
The Last Metro (it's more a different restoration than really an upgrade)
In the Realm of the Senses
Howards End
Vivre sa vie
Zazie dans le métro
Black Moon
Léon Morin priest
Belle de jour
Purple Noon (but SC's later 4K restoration is an absolute dud to the point that despite being 2K-only, Criterion's restoration is just so much better)
Some of these are now "old" (within the technological time frame) so it's only logical the movies might have been revisited since, especially since the Criterion restorations often are exclusive, thus leaving the local right holders doing its own restoration (for instance in Japan).
andyli wrote:
If you check the product page of Criterion's La Notte it says new digital restoration from a 4K film transfer. So I guess it is indeed the same restoration.
That's what Criterion wrote in the booklet :
This new digital transfer was created in 4K resolution on an ARRISCAN film scanner from a 35mm fine-grain; the original 35mm camera negative has been lost. Thousands of instances of dirt, debris, scratches, splices, and warps were manually removed using MTI's DRS and Pixel Farm's PFClean, while Digital Vision's Phoenix was used for small dirt, grain, noise management, jitter, and flicker.
Colorist: Russell Smith/Criterion.