I've just been sent two fantastic pieces of code which I happily share with the usual provisos: unsupported, etc. The first is something a lot of people have asked for: a way for an approver to be able to add a comment stating why they have rejected a document for publication. The second is a Web Part that allows (for some people) better search options on their Workspaces. Both have Readme's which are essential and both were sent to me by Steven Collier, someone who's always been a valued member of our little SharePoint community.

SPSFAQ090125 - Advanced Search Web Part Downloads
SPSFAQ090124 - How can a Approver send a comment saying why they did not approve a document for publishing?