The SEOmoz team released a two page PDF based SEO Web Developer Cheat Sheet that I personally printed out and gave to my RustyBrick developers.
I did make a couple changes to it, nothing major. For example, as a matter of style, I personally like to reverse the suggested "Recommended Title Tag" from having the web site name go last, instead of first - or even not show the web site name at all. Update, it seems like SEOmoz updated their PDF to have the title tag start with "Keyword" then go to "Category" and then show Web site name. That is exactly the change I made when I printed it out and gave it to my developers. In addition, I typically would tell my developers to add the first two lines of content from the database into the META description field.
Overall, this cheat sheet, should be on all web developers desks. It is a great guide and it looks pretty.
Forum discussion at Sphinn.
