This could be just the thing for me to forget how unbearably stagnant and boring I ultimately find Oblivion to be: the ability to transmogrify into huge ogres, gigantic walking sticks and carnivorous cephalopods.

It's the Polymorphing Mod for Oblivion, currently being programmed by Grimenir over at the Elder Scrolls official forums. Thanks to megadethr for the tip! Florian Eckhardt

Polymorphing in Oblivion [Elder Scrolls]