I *almost* killed a random Hunter just because he called me a cat.
Punched him three times and took down half his health, but decided to not continue after he didn't retaliate.

Edit: And I came close to wanting to murder J'zargo after I discovered what his scrolls did in the middle of a fight in the last dungeon for the College of Winterhold quests on Master difficulty.
"Oh hey let's try those scrolls out for once..."
*boom*
"J'ZAAAAAAAAAAAAAAAARRRRGGGGOOOOOOOOOOOOOOOO!!!!!"