Whoa, Piedmont! There's a blast from the past ... and it's so true. They were awful. Even the peanuts weren't very good, as I recall.
The current bain of my existence is NWA. I've had two awful flights on them this year. The flights themselves were pleasant. The service and delays were just ridiculous. (Delays were traffic-related ... not weather.) Ugh.
Though I have to say Delta is a close second. Or maybe they're worse -- I had too many bad experiences, so I stopped flying them.