In the past there have been quite a few Muppet christmas movies and specials, one valentines special, and the rumored halloween special. Also, christmas and halloween seem to be the two holidays celebrated the most in fiction. But if Disney were to ask you to write a Muppet holiday special, but let you pick any holiday except for christmas and halloween (and valentines, sicne the Muppets have celebrated that), then what holiday would you pick?
Also, I think Disambiguate means to avoid ambiguos things. I've seen the term used on Muppet Wiki to avoid confusion between articles on characters and such that have the same name or title.