Wow, ewags, I'm so jealous. Looking for fun, are ya?
Another vote for 'Ohana and 50's Prime Time, especially 'Ohana. Of course, any character meal is gonna be fun - I'd give the nod to Liberty Tree Tavern in MK.
Whispering Canyon Cafe is a lot of fun, but you'll get some who would not agree.
If you want a little more sophistication with your fun, try Marrakesh at Epcot (fun being the belly dancer). The Biergarten serves up some entertainment, too.
For more fun, a lot of folks swear by Chef Mickey's. I like it for breakfast, but it's kinda expendable otherwise, methinks.
Have a blast!