Over the past few weeks, I’ve been working on-and-off on the Post-Meta feature for WordPress that I mentioned previously. I finally got it to a minimally functional state, and announced it on the WordPress development blog earlier.
I’ve been updating the implementation details on the WordPress Wiki. I can’t wait to see what kinds of hacks people come up with for this feature. 
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I’m planning to write one to allow you to turn off autop and/or smartquotes for a post.
I did it, WP Unformatted.
http://www.alexking.org/software/wordpress/