Very clear, step-by-step guide to managing and ExpressionEngine site with git and Capistrano. I might try this some time, as it would make messing about with templates and so on much easier and - more importantly - undoable.

Seems like a very nice, PHP-based extendable forum. If I wasn't using the EE discussion module, I'd probably install this.

Web-based, PHP-driven calendar

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An interesting templating system. Seems quite a bit simpler than Smarty.

Hopefully I'll remember to look at this next time I encounter a problem with PHP. It's also a nice guide to good coding style.

Aha! Another (neater) solution (thanks David!)

I saw this a couple of week ago, and forgot to bookmark it. Useful for people like me who are trying to learn PHP and know a little Perl