iMonk is always beset by Catholics trying to convert him. I have my occasional running battle with atheists.
Over at Pyromaniacs, they fight with anyone who isn't strictly orthodox - although there seems to be a trend towards emergents and continualists (the opposite of cessationist).
Of course, this leads to more polemical posts against them, and additional reading of books (to explore the state of the church).
Digging through my archives, I found this interesting post (from April).
This really captures the dangerous aspects of this theology. I can attest that the dangers Dan speaks of here are real - there are people who are being negatively impacted by this dangerous theology.