This article by Dr. R.C. Sproul examines Pelagianism, a teaching that denies the necessity of grace and original sin, and its existence in the heart of modern evangelicalism. Before I read this, I would have described modern evangelicalism as Arminianist, and even semi-Pelagian. But Dr. Sproul points out some very interesting inconsistencies in the thought of modern evangelicals which indicate more of a bent towards full out Pelagianism than semi-pelagianism.
In short, it is a good read for those wishing to better understand the evolution of the attacks against the Grace of God: those attempts which aim to introduce the work of man into the equation which results in a salvation that is, in the end, effected by man himself.
The Pelagian Captivity of the Church, by R.C. Sproul