My impressions: Bihar isn't any worse than MP or UP, and a case can be made that Orissa may be nicer than all three (certainly Bhubaneswar is loads nicer than Patna). This leads me to believe that much of the stuff we read about these places is wrong.
Which leads me to my question: Where's the place you'd wish upon your worst enemy? Give me your grim stinkholes, your disgusting deathtraps, your loud, polluted, rude, poverty-stricken, 52 degree Celsius top three. IAS officers welcome.
And, what the heck, give me a couple dream postings, too. Someplace where it's never too humid and you can pick mangoes from your terrace.