Past, now irrelevant back story: I was trying to make some changes to BlueBand and get 'up and running pretty quickly' but after looking at it further this is no longer an option due to tables that a previous developer introduced into the layout. I'll have to live with this and make what tweaks I can.
So, looking towards future greenfields projects…
Are there any recommendations for CSS frameworks that work nicely with SharePoint publishing sites? (Examples are BluePrint, YUI.) They should not interfere with standard out-of-the-box controls such as the Site Actions menu, rich text editor, and publishing toolbar.
Real world experiences welcomed, please!
What would you like to use a CSS framework for? As far as I can tell you could use one for making a cross-browser reset but everything else just depends on your layout. If you're planning to throw out the standard SharePoint layout it means that you need to start from scratch. The good news is that it's not much different than creating a layout for any other website. There are some things you need (http://msdn.microsoft.com/en-us/library/aa660698.aspx) while working with SharePoint but as for CSS it's all up to you.