Hackdirt
There's a town south of Chorrol called Hackdirt. It's the source of the 'start a fight in a church, guy runs home to get his sword and raise a posse' story.
I couldn't figure out how this area was supposed to work. You talk to the locals and they're all "We don't serve your kind, outsider." "The Brethren will deal with you if you don't STFU."
I found the Brethren's underground lair and cleared it out. That, coupled with reading the book on the altar in their church led my character (Crusader) to only one conclusion - the town must be destroyed, before any more innocents are slain.
So I went around with my sword drawn harassing the locals. They had a midnight mass in their church that didn't seem to amount to much, then they all left. Except one, whom I promptly slew. Turns out they all went into the underground base. There, they all attacked me, and I cut them all down.
Problem was, at no point had I attacked anyone who had not threatened me (if you piss an NPC off enough, he'll draw on you) first or taken anything that was marked red (illegal to take). But when I reached the next town, the guards accosted me for stealing 112 items and assaulting 8 people.
200 gold, it cost to remove that stain upon my honour. But it was worth the cost to maintain peace and order.
Oblivion Portal
On my way to Imperial City after being inducted into the Blades, I came across an Oblivion Portal at a fork in the road. I charged right into it, killed a whole pile of Doom Imps but I couldn't get through any of the War Gates.
And the not-totally-Bad Daedra I did find had quests that were difficult for my character. Not to mention annoying offering requirements. *cough*Sheogorath*cough*