I've written about this in my list at the beginning of this thread, but I don't think I can emphasize it enough. If you ever get to Disney World, you MUST, MUST, MUST NOT miss Illuminations at Epcot.
This has got to be THE best fireworks-lights spectacle shown every night. The unbelievable timing with the music, and the music itself, haven't been matched anywhere else. Even the new lights and fireworks show Wishes at the Magic Kingdom cannot match the whole package of Illuminations.
I typically see this at least twice on every trip to Disney World. I have at least 4 different video recordings of it that I've edited to include the original music that accompanied the show (you can buy the CD at the theme parks). There's a slight tweaking and differences from year to year, but the whole concept is still as rousing as ever.
So, if you are ever at Disney World, don't forget. At 9:00 pm, be at the entrance to the lagoon, which is the best place to view the best nightly show anywhere.
[5 more days to Disney World and counting...]
Zz.