Oblivion Easter Egg - Secrets N Stuff

Suicidal Troll
Head to the "Mouth of the Panther" (you can fast travel if you discovered it or if you started "Forlorn Watchman" quest) head north until you reach a bride and highwayman kill the highwayman and then head under the bridge. The troll is in the water and on it is a suicide note

Arena Signs
The signs for the Arena in the Imperial City is the original cover for the Elder Scrolls 1 Arena. Cool lil bit of nostalgia

Haunted House
Head over skingrad and hunt down Naestraels house (spelling may be wrong) but across from it is the Haunted House. Just break in a be greeted by ghosts

Black Dog Camp
This may be a reference to the Led Zepplin song (Im guessing it is). Just cool to find it. Nothing special in it. Just cool