[Greasemonkey] Any Greasemonkey applications out there?

[Jonas Lundberg]

I am looking for Greasmonkey applications, to present in an overview
of what can be done with Greasemonkey. Specifically, I am looking for
cross-site scripts, which are used to communicate between different
sites. Thus, not scripts which fix problems or improve specific sites.

the Book Burro (no presentation needed I guess) is a good example, and
also the Web Tour Sidebar script (which loads contents from different
sites into a sidebar, and then makes that content available when
visiting other sites).

What are your favorite applications?

Regards
Hans