Die hard Nats fan here, from Fairfax. Been a fan since day 1, grew up a Pirates fan since my dad is from Pittsburgh and DC didn't have a team. Never liked the O's and still don't. My least favorite teams are the Braves(they cost me from going to the world series a couple times in the early 90's), the Yankees and the Red Soxs. I never knew this site excised until someone posted a link on the MLB owned Nats forum site. My favorite Nat is probably Jordan Zimmermann along with Strasburg. Least Favorite is Desmond which is probably a pretty popular answer.
Welcome ... I lost my heart on October 14, 1992.
http://www.post-gazette.com/stories/sports/pirates/the-slide-the-moment-that-begat-a-legacy-of-losing-for-the-pirates-629357/