Town Square Theater is a meet and greet in Main Street USA at Walt Disney World's Magic Kingdom. It's worth seeing on a time-permitting basis.
This is the place to meet Mickey and Minnie Mouse in person in the Magic Kingdom. Expect a long wait, but when it's your turn, your party will be escorted into a private room where you'll get some alone time with Mickey and Minnie. There will be a photographer there to take your picture, too. (You can buy the Disney photo, but they'll be happy to snap a shot with your camera, too. This is true of Disney photographers throughout the resort.) If you get lucky, you might get one of the talking Mickey Mouses (Mickey Mice?), who can carry on a conversation with you and the kids, instead of simply miming, as all other theme park cartoon characters do. The talking Mickey began appearing more often in the Magic Kingdom in 2013, but isn't "official" yet, so most visitors continue to get the traditional, mute Mickey.