Great question there Sweetie!
I just love the World Showcase. It's amazing that you can explore it and feel as if you still have more to explore. During Food & Wine, Flower & Garden, and the Holidays there is even more to explore. I, like Denise do not have one I don't enjoy so I will try in this route instead.
Favorite film/Circle Vision: Reflections of China @ China (I still haven't seen Canada's new film)See, I can't pick just one! Looks like it's China, France or Morocco that win here. Overall I would say the one I've spent the least amount of time visiting Germany so that might be my least favorite? But that can easily change with time.
Favorite Attraction: El Rio/Grand Fiesta Tour @ Mexico
Favorite Dining location: Was Alfredo's, now it's Le Cellier SteakHouse @ Canada
Favorite Dessert Location: Boulangerie Pátisserie @ France
Favorite Entertainment Show: The British Invasion @ UK, followed by Off Kilter @ Canada
Favorite Pavilions to Relax in at night: France, Morocco, Japan, Italy, and China
Most Friendly Cast: Morocco, France (This is from my experiences only)