It would take days to fully explore all the area in World Showcase area. Strolling through the different areas, you can sample food and drink and fun from many different countries. The view across the lagoon is stunning, especially on a bright sunny day, or at night during Illuminations (I love this water/firework/laser show but missed it this trip - it was about 35 degrees the night the family attended).
My youngest dining at Chefs de France (where he had chicken fingers!)
Being an Anglophile, Great Britain was also one of my favorites. We had a filling lunch at Rose and Crown, where we sampled classic British fare such a fish and chips, along with some local ales . . .
One of my other favorites in World Showcase is Norway. It contains a small thrill-ride, Maelstrom, which takes you on a stormy ride into the world of Northern Lights and trolls on a boat reminiscent of those used by the Vikings. The ride disembarks in a recreation of a Nordic village where you feel you are actually on a dock in a tiny port side town.
P.S. - In trying to set up the shot for the photo above, I took the picture below. Typical boys who will fight over anything. It ended up being our Christmas card photo for 2010 - with the caption "Naughty or Nice?"