I saw this a little more often this week in the uh-mazing atheist blogosphere. Of course I rarely see any passages put forward as being hopelessly contradictory. The last one that someone was actually able to point out was Exodus 20:5 and Ezekiel 18:20. Apparently atheists don't know how to apply contextual hermeneutics to what they read. Well, they get by in everything but the Bible, so maybe they're cherry picking.
Of course Exodus 20:5 is a part of the 10 commandments and is speaking of the covenantal consequences of idol worship for the Israelites. Ezekiel 18:20 is recounting the law of the Pentateuch which is dealing with individual punishment for breaking the law. One speaks of the consequences of God removing Himself from Israel for their breaking the covenant. The other is the immediate judicial punishment for breaking a law. This is even evident today. Children may suffer from consequences of their parents breaking the law, but we don't charge those children with breaking the law their parents actually broke.
But what did the inerrancy skeptic do here? He took two separate verses from two books written hundreds of years apart by different authors in different situations. You can't do that with literature and have anything make sense. I'd love to see the stuff atheists write held to this ridiculous standard.