How funny, we just got back a couple hours ago!
The most obvious stuff would be the jousting and the Ded Bob Show. These are probably the most popular and widely known shows.
We really enjoyed the "Throw Up" show (which was juggling), it was well done and very funny. The Mud Show was good but it freaked my girls out as they don't like to get dirty and DH was unexpectedly a volunteer. Off the beaten path there is a Combat Arms show - I believe it was in either the German or Spanish section - very far left as you enter I believe - it was GREAT! The easiest way to find it would be to look for the museum.
All of the food was good. I had a phily steak sandwich that was good, the fried mushrooms were outstanding and if you like strawberries get the strawberry pudding. It was vanilla pudding in a waffle cone with sweetened strawberries all through it. The chocolate was also good, much like chocolate mousse and also served in a waffle cone.
For shopping, make sure and visit Designs in Wax. They have the best candles I've ever found, bar none. I've tried Yankee, Party Lite and these blow them away.
Don't forget sunscreen and bug spray, there were a few mosquitos out even in the morning. We were there from 9:30 until about 5:00 and the entire family had a blast. My kids have babbled nonstop about going back.
We are quite a ways away and stay in a hotel. If you need suggestions let me know!