Electrical Water Pageant
This nightly "parade" was first performed on October 26, 1971 during the dedication of the Polynesian Luau.
While old fashioned by today's standards, it's still fun to head to the resort beachfronts to watch it go by. There are two segments, one is a King Neptune theme, the other a salute to America.
The Electrical Water Pageant usually follows this schedule:
Disney's Polynesian Resort - 9:00pm
Disney's Grand Floridian Resort & Spa - 9:15pm
Disney's Wilderness Lodge - 9:35pm
Disney's Fort Wilderness Resort & Campground - 9:45pm
Disney's Contemporary Resort - 10:05pm
Magic Kingdom park - 10:20pm (only during extended Magic Kingdom Park hours)
(You may want to check with the resort just in case the schedule changes or if its canceled due to the weather that day)