Name That Company

Founded in 1923, my business stems from the mammal mus musculus, cousin of Speedy, Mighty, Jerry, Danger, Fievel, Itchy and Motor. Many people, especially small ones, think I'm supercalifragilisticexpialidocious. I opened my first park in 1955 and now operate a bunch in the U.S., France, Japan and Hong Kong. I'm the second-biggest media conglomerate in the world, with four major business segments: studio entertainment, parks and resorts, consumer products, and media networks. My brand names include Pixar, Miramax and ESPN. My main TV network is easy as 1-2-3. I built a utopian city in Celebration, Fla. Who am I?

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