Turtle Talk with Crush is an absolute Must See with preschoolers, and especially so with a Nemo fan. In a nutshell, you go into a room with a large screen at the front and benches for the adults to sit on (the children can sit on the carpet nearer the screen). Crush appears on the screen as if he were behind a windown looking directly into the ocean. He then 'interacts' with the children, asking their names, referring to them as 'boy in the yellow shirt' or 'girl with the Tinkerbelle hat', etc. They can ask him questions and he answers them quickly, humorously, and in that slow, 1960's style Crush does so well.
It's a delightful show, but the wait times are horrendous. Plan a good hour or more if you don't arrive early. Happily, there is a Kidcot station nearby if you have someone to hold your place in line.
The rest of the pavilion is relatively uninspired. Your basic aquarium with Nemo signage.