A few bits of code I’ve written:
- WP Mail SMTP WordPress Plugin
- Disable Visual Editor WordPress Plugin
- Real Global Terms WPMU plugin
- SH Global Posts WPMU plugin
- mEBuyYouADrink WordPress Plugin
- WP-Block-Admin
- WP Mail Log
I work mainly in PHP and some HTML / CSS. Most of my coding relates to WordPress and WordPress MU.
I’m also getting involved in WordPress Optimisation for high traffic sites.
Bugs
If you’d like to let me know about a bug in a plugin that doesn’t have its own page here, please let me know in the comments below. 
I’m trying to use your WP Random Header on a stock WP 3 with Twenty Ten, and after I activate the plugin, all that is displayed is this:
array(13) { [0]=> NULL [1]=> NULL [2]=> NULL [3]=> NULL [4]=> NULL [5]=> NULL [6]=> NULL [7]=> NULL [8]=> NULL [9]=> NULL [10]=> NULL [11]=> NULL [12]=> NULL }
I can see your plugin working on your site, so is there a secret?