We've enjoyed Pecos Bill's, especially the chicken wrap. We often order food and find a spot along the porch out front to watch Spectromagic while we eat.
I'll agree with PP about Electric Umbrella - very typical CS. But it is usually easy to find a seat, fairly quiet and comfortable (nice to escape from the summer heat compared to some of the CS in WS). For me personally, it's also a little nostalgic when I remember my trips to Epcot as kid, right after the park opened in the early 80s. I think it had a different name back then but it's still reminiscent of "old school" Future World!