wiki navigation bar
http://svn.ipd.uka.de/trac/javaparty/wiki/TracNav has a nice concept of navigation in wiki's. it would be good to have such a plugin in moinmoin too
This can be done with some CSS and no code changes, cf. http://sprungbrett.tu-clausthal.de/ and http://sprungbrett.tu-clausthal.de/?action=raw