Ariane Khachatourians (arianek) is a tireless contributor and maintainer of the Drupal.org handbook. She's the single most active person in setting the direction for the handbook, and by far one of the biggest contributors. Take a look at her tracker to see where she's been lately.
She is...
And to top it off, a really nice person who just keeps working to make Drupaldom a better and happier place. And who is succeeding at that.

Drupal.org Profile: http://drupal.org/user/158886
G.d.o: http://groups.drupal.org/user/984
Personal blog: http://westendgirl.ca
Other blog: http://spendlocally.ca
Work blog: http://affinitybridge.com/blog
Twitter: http://twitter.com/arianesays
Roundabout story, but while working on my MA in Health Geography at Simon Fraser University in Vancouver, Canada, I needed a creative outlet, and started a (now defunct) small business making organic/sustainable accessories (bags, etc.), and had my friend Scott set me up a Drupal site for it, then with OSCommerce. I'd heard about Drupal somehow (wish I could remember where!) months prior, and had told Scott about it, and he started attending local meetups. Then as I got more interested in how to improve my website, I started learning some basic HTML/CSS and Drupal config.
When I was done school, and was job hunting, I did a tiny bit of Drupal contract work with Scott, and then ended up tagging along with him to DrupalCamp Seattle in 2006. There, I went to a session about what you can do with modules that was presented by Boris Mann, and... well, we all know what happens once you meet Boris. He answered all my crazy bright-eyed questions, and I was hooked on "the Drupal". I got an entry level job at a Drupal company the next spring, and then moved to Affinity Bridge in 2008, where I've happily Drupalled ever since.
My involvement in the community has definitely been driven by being lucky enough to get mentored and support along the way by people like Boris Mann, Steven Wittens, Angie Byron, Károly Négyesi (aka. chx), Scott Hadfield, Rok Zlender, Greg Dunlap, Katherine Senzee, Jennifer Hodgdon (my docs partner in crime), Kat Bailey, Djun Kim, Adrian Rossouw, my fantastic coworkers at Affinity Bridge, and lots of other wonderful contributors, many now friends, who I've met through the Drupalverse.
Where do I start? Like I've heard others say, it sounds cheesy, but Drupal has changed my life: