MK - Cosmic Rays, Columbia Harbor House
AK - Flame Tree BBQ
Epcot - Sunshine Seasons, UK's Yorkshire Fish Shop (not much variety or quantity, but we love the fish fillets).
DHS - ABC Commissary (mostly for the AC if it's hot), Pizza Planet (to please the kids), Backlot Express (decent burgers)
Overall, the CS in the parks could use some upgrades or greater variety. When possible, we try to visit new and different resorts to try some of the better counter services!