I just started to play Battlefield 2. I am mainly a Call of Duty 4 guy. I actually play on a professional team on Xbox Live. We are part of a bigger clan called Art of War. You can visit the site here --->
http://www.clanaow.com/
Anyone who is good can sign up on the forums and ask to join.
CS: Source is awesome. I could never really get hooked because my time is limited between my robotics team, school, and my clan. ^_^