I’ve just done a major update to my WordPress plugin, “Wordspinner”. I haven’t mentioned it here before but it’s been in development for years and it getting pretty popular!
It’s mainly an SEO tool but it also serves as a really simple way to randomly display one of many bits of data (images, text, ads).
There’s more info on the plugin site at WordPress (including statistics!): http://wordpress.org/extend/plugins/wordspinner/