I spent a good part of the weekend going through the apps I've installed via Fantastico!

If your web hosting provider doesn't support it, consider LiquidWeb. TONs of preconfigured, click to Install, open source apps ranging from blogs, Content Management Systems (PHPNuke and Xoop to name a few), full-blown eCommerce systems, Forums, Wikis, Web Calendar (iCal friendly), Chat, Distance Learning Software, etc..

Fantastico!