DD loves her Mick, too. (She's not into Minnie so much.) She can laugh at Donald's antics forever; yelling Duck! Duck! the entire time.
She adores the Mickey and Donald shorts in the Walt Disney Treasures DVDs. (The ones in the silver cans.) She also likes a lot of the Silly Symphonies, especially Water Babies.
She doesn't have the patience to sit all the way through the full-length features yet, but she is fond of selections from Beauty and the Beast, Cinderella, Jungle Book, Cars, and Finding Nemo.
Note that her interest in BATB and Nemo developed AFTER trips to the parks. She knows those because of the Finding Nemo ride at Epcot, and Mickey's Philharmagic and the live BATB show.