I personally have enjoyed the Happiest 50 Years of Walt's Millennium of Magical Gathering Celebration. :hammer:
I agree with Thrawn, it is an ingenious marketing tool. For the average family that only looks into attending WDW once every few years they would not notice that there has been more or less an continuous celebration since 2000.
But for the rest of us, who have a heightened interest in the parks/company it would seem that there has been one celebration after another.
In my opinion (and feel free to disagree) some of the celebrations were justified (Millennium Celebration, Happiest Celebration on Earth) and some were may be not so (100 Years of Magic).
Although this could be, to me, that the new millenium and Disneyland's 50th year are worth noting from a historical perspective and the 100th birthday of someone who has already passed seems somewhat irrelavent, regardless of thier contributions to society. No disrepect intended, but for example we are not marking the 115 birthday of Dwight Eisenhower who organized the D-Day invasion and was the President from 1952-1956 (I think). Not that I'm an Eisenhower freak :lookaroun but he was the first important person that came to mind.
I am not a marketing major but it seems that have a themed event ongiong in a location such as WDW allows for easier marketing of the product. You would have the theme to grab initial attention from a person and then you can explain what benefits would make the expendature of money worthwile.
Just my two cents...carry on.