i'm replaying oblivion right now, i cant believe how much side quests the game has. I just did this mission where I had to follow a bunch of guys for this paranoid elf; it eventually led him to offer me to waste them for 1k; i went out and told the guards about him; they promptly ran to his house, waiting for him to go out and killed him.

no 1k for me but +1 fame

I also bought this 5000$ manor from this rich tart in Anvil (or whatever); when i got inside, the place was completly runned down. I took a nap and holyfuck when i woke up, the whole place was filled with respawning ghosts. The place was haunted! I went back to the tavern where I first saw him, the patrons told me he had been seen running away to the imperial city where i eventually tracking him down. Turns out he was the descendent of some old necromencer that was offed by the local mage guild, that manor happened to be the place where he lived. We went back and the guy opened the door to a secret crypt, and inside there was the body of the old guy. He started talking about needing to have his body whole so he could finally rest in peace; i gave him back his severed hand i had found upstairs, and omgwtf it's a trap! He materialised as an armored skeletton with fire powers; we fought hard but i eventually got the best of him. The curse was lifted and when i went back upstairs,the whole place looked good as new.
Awesome is this game, this game is awesome.