Bandits?....Mammoths?...Hagravens?
List your favorite creatures to kill in this game. Me, well I like killing sketchy [censored]s such as the dude in Dawnstar who
Spoiler wanted to bring the Mythic Dawn back
. I started to accept his quest, but then immediately smashed his face in with my warhammer. Seriously....that guy was nuts.
Spoiler also I plan on killing off the Dark Brotherhood as soon as possible. Cicero is an annoying [censored]
Man did you screw up then, shouldn't have killed him, he didn't want to bring "them" back, merely create a museum so others could see what they did as a part of history. (Much like the world does today with the Nazis in WW2, they may have been considered "evil", but we still teach others about them today in museums to help avoid it from happening again.) Also it leads to
Spoiler a daedric artifact, mehrunes razor.
Not only did I not kill him, I helped him to my own detriment. You should have at least waited till the end to kill him, you'd still get a TON of treasure, quite possibly the largest confined quantity of it anywhere in the game.
Think I de-spoilered that enough. Especially considering how many spoilers are in post before this one.
Edit: Back on topic, my favotite things to kill are the Thalmor and giant spiders. I just love the web covered, dead bodies drained of their fluids hanging from the ceiling atmosphere. I know others don't.