I’m glad you asked my friends. Here are a few articles on great plug-ins for WordPress.

1. 20+ great wordpress plugins @ mashable
2. 10-essential-wordpress-plugins-to-start-your-blog @ webesigner depot
3. useful-wordpress-plugins @ webdesignerwall

I know most of you are probably experts by now, but there’s a few out there still getting into the blogoverse. Plus, it’s always good to see what others are using and keep an eye on the competition if they are competition. The Mashable list has some good ones outside the normal ones that everyone and their dog is using these days. Take a perusal and see if anything looks like it might help you.