Christianity: Alternative Viewpoints
The Cathars
http://en.wikipedia.org/wiki/Catharism
http://www.cathar.info/1201_beliefs.htm
The "conventional" christian history likes to pretend that the catholic church was the main authority on christianity, until the protestant reformation or maybe the orthodox church. Actually this strain of christianity was only one of many rival strains throughout history, with the rest now rendered extinct through the cruel efforts of popes throughout history.
Ironically, I feel like this interpretation of christianity is much more sensible and moral than the conventional interpretation...
The Gnostics
http://en.wikipedia.org/wiki/Gnosticism
http://www.newadvent.org/cathen/06592a.htm
That second article tries its hardest to make Gnosticism sound horrible. However I can't help but to laugh, because almost every "negative" thing it brings up, I actually agree with. An early strain of christianity, this actually rivaled the catholic interpretation in size in the early church. If history had been slightly different, what we nowadays considered "christian" would be radically altered.
We are used to considering mormons, rastafari, or unification church as some screwy mutation of christianity. However, the "real" christian theology, was as tenuous as those back in the day.
It seems to me like it would have been much more beneficial had the gnostic interpretation come to be dominant. Actually, most of the contradictions that christians have spun in circles trying to explain away to me, are easily resolved in this system.