Cristianism as an institution is an entirely different affair (for that, Werner Jaegger's "Early Christianity and Greek Paideia" was quite enlightening). However, for many years I used to think very poorly of the character of Jesus too (who knows -and who cares- if he ever existed, I mean the character created in the gospels) until I saw this: >>/ot/23499 ...
I mean, I still didn't became a christian, by any means (I believe in conquer rather than charity), but he certainly earned a huge respect in my eyes. Aside from the myths of resurrection, Final Judgement and such, with his incredibly insightful yet accessible ethical discourse (notably the Sermon on the Mount) he embodies an impossible but beautiful dream of true brotherhood and unconditional love.
You should give the movie a try. It's long and hard to endure but I think it's worth it.