THE FUTUROSCOPE!! no actually it's good but too expensive, and if you want to see everything, you have to spend 2 days here, to sleep in a hotel near the place, and it's realy dear! and it's quiet frustrating when you queue for 4 hours to see a 2 minutes film!!
I was very disappointed while visiting the Futurosope. Here is why:
It is a theme park but what is the theme ? It is too boring to be a leisure park and not interesting enough to be an educational park.
It is old. So the Futuroscope is a Past-O-Scope... Except for the very 'modern' buildings, all the I-MAX and 3D technology is 10 years old... Even the 'CyberWorld' ride (the best one) sponsored by Intel shows 'rendering computed on a Pentium Pro processor' in the end...
it is static. Nothing moves outside. No vehicles. No animation. The attractions use slightly moving platforms that get you sick instead of giving any realistic sensation
it is expensive (for what it is...)
So to sum up:
go to Florida at Disney's EPCOT center it is ten times better
ride Universal's Studios 'Superman' to experience 3D of the 21st century.