I'm also enjoying this thread. My DD will be 2 1/2 when we go next spring and although she's been once before, at 1 1/2, they grow and change so quickly. Too quickly, lol. I find it SO interesting to read about what other 2 year olds enjoyed. I hadn't even thought of the "non-rides" like transportation and fountains...hmmm, maybe I should be sure to allow extra time for those things in our itinerary, LOL.
At 1 1/2 DD's favorites were:
At MK: birds on Tom Sawyer Island, Dumbo, Pooh, Dream Parade, Wishes, (we missed Spectro)
At Epcot: the lights in the sidewalk at night, Illuminations
At AK: TriceraTop Spin, the tigers, TriceratopSpin, and did I mention TriceraTop Spin?
At MGM: Playhouse Disney, Fantasmic
She also loved all the characters except Cinderella

, and all of the "props" at the Winter Summerland mini golf course...we had an impossible time trying to get her out of the photo-op sleigh at the end!
She didn't cry over anything, but didn't care for the 3D movies much.