I always found the food and wine pairing lunches to be better than eating at the kiosks. The food is of a higher quality, its actually plated, and you can sit while eating it. Italy (both restaruants) and Mexico are good ones (Mexico is a tequlia lunch, so there you go, 3 courses, 3 tequilas plus a margarita). There are a few booth items that are pretty good. Beef with chimichurri, empanadas, pork belly, venison, pork lettuce wraps, and escargots are good.
What I found really disappointing is that much of the samples are not made from scratch recepies, but instead are Sysco food service frozen items. I was at F&W very early one morning a number of years back (when they were holding the prelims to the Bocuse D'Or) and I was back by the kitchens for the Bocuse D'Or and they were doing the moring load in for some of the kiosks. Cart after cart of pre-packaged frozen stuff. Granted, for the volumes that WDW F&W does, I don't see how they could do it any other way, but still, it was a bit of a let down to see it in person.
-dave