Most Recently, we released the AdSanity plugin for WordPress. It is a new banner management platform for WordPress that allows you to create, track and compare ads. If you manage banner ads on your site, and you hate how clunky the interface is, I encourage you to give AdSanity a try.
Other than that, I develop custom plugins and themes for our clients at Pixel Jar, a WordPress focused development firm based in Orange County, CA. I not only develop on WordPress, but WordPress multi-site and BuddyPress platforms. I have developed more than a few e-commerce websites using the fabulous Shopp Plugin.
I attend, sponsor and speak at WordCamps throughout the United States and organize WordCamp Orange County with Jeffrey Zinn.
You can view my WordCamp Presentations here.