It's not as good as Rayman 2, but it's still a fantastic game! On some computers the texture will not work, but it can easily be fixed by setting TnL to 0 in the ubi.ini file.
This is one of my favorite games and it doesn't only include the original Rayman game. You also get the Rayman Desginer, Mapper and Rayman by his fans. So you can even create your own levels!