Since before my recent trips which started in 2005, the last time I had been to WDW was during it's 10th anniversary year. Epcot was still being built.
I remember 20,000 leagues under the sea though...and I remember how much fun it was. Most likely though, with advanced as WDW has become, if they still had that ride, it would most likely not have the same affect. Given that I'm 25 years older....