Two posts really entertained me today, and I think they might do the same for you.
Mike Bridges has a fun post reviewing a poll about Which Monster Should Attack Town?. I don't love the tarrasque - it just seems overdone, Gojira to deal with up-gunning PCs too much, but I do like the review of monsters. I've used a fire-breathing dragon and purple worms, maybe it's time for rocs and titans?
Doug discusses murder in town, mostly in a Viking context. But his conclusions are universal - make engaging in legal issues fun and interesting, not punishing, and the players are more likely to do it.