Today was the 1st June, and that means it's Regex Day again!
This annual event was started four years ago by Ben Nadel to celebrate this wonderful (yet often misunderstood) technology, and as usual Ben is running a fun regex competition, with prizes, on his blog.
If that's not enough regex goodness for you, here's a couple of projects you should know about.
For CFML developers, there's cfRegex a replacement regex implemenation providing more power and functionality than CFML's native functions, whilst being easier to work with.
Whatever your level of regex skill, both of these tools are definitely worth checking out.