I have been really rocked over the last few days by the words of Dr. Timothy Keller, the Senior Pastor of Redeemer Presbyterian Church in downtown NYC. I read some of the article below before, but this is a time in my life when they really mean so much more.
Articles...
The Missional Church - pdf
Post-Everythings
Evangelism through "Networking" -pdf
Audio...
Vision Talks - especially 2004
For more, DJ Chuang has an excellent Keller resource list (though some links didn't work for me).