If you want to visit the Magic Kingdom before Mickey's Toontown Fair closes, you'd better start planning soon. That particular area of the park is set to be closed on February 11, 2011, as part of the ongoing Fantasyland expansion.
This isn't exactly shocking news as Disney had announced plans to "repurpose" Goofy's Barnstormer when the first news of the expansion hit. However, it is a bit of sad news as the Fair has become a fixture at the kingdom and is a popular stop among the character-seeking set.