I just got my hands on a working version of the program I used to rip the Rayman 1 sprites from the PSOne version. Now, I'll be able to rip the backgrounds and the sprites from Rayman 1 and the Rayman 2 beta level at the end of Rayman 2 for PSOne.
And I already have some progress:
Note: When updating this list, the latest images are in img-tags, the rest of the images are links.
RAYMAN 1 - Not so much progress...
The World Map ( COMPLETE! )
Some of the font
Final Fight Background
Sprites that are loaded into memory by default + Final Fight Sprites
Candy Chateau Tiles
RAYMAN 2 - BETA LEVEL - Completely finished!
The Background from that beta level
The sprites ( from the objects ) from that level
The tiles ( background & foreground ) from the beta level
RAYMAN ORIGINS
RAYMAN LEGENDS
The background and the tiles only took me a few seconds, but the sprites took me a lot of time - I think an hour or so, mainly because the sprites use many palettes, and every time, I have to search for the palette ( I can easily find them though... ).
Do you want your R1 background/sprite ripped?
Just use ePSXe, the playstation emulator, and the Rayman 1 CD ( or ROM ) to go to that level, and make a savestate.
Go to ePSXe's folder, to sstates, and find the right savestate you made by looking at the dates. There are two files, a *.pic file and a file with a number as extention ( *.000, *.001 , etc. ). I only need the file with the number, so send that file to me with Yousendit ( my email is [email protected] ), or send it to me in another way. I'll rip what you want.

... but of course, when I have time, and I'm bored, I'll also rip some ( useful? ) things myself.
Droolie.