AskApache RewriteRules Viewer is a simple plugin that makes it easy for developers and code hackers to view the current WordPress RewriteRules at any time.
Futures Contract Plugin will display this month’s futures contract price on the sidebar of your blog. Prices are updated from the Chicago Board of Trade.
PicasaWebShow will display all or part of your Picasa album on your blog. EDITED for content, NSFW
Sub-page Links creates an automatic index of all sub-page (child, parent and sibling) links through a template tag in the page template.
Upcoming Events can receive iCalendar feeds from third party sites and display aggregated upcoming events from multiple feeds.