Ogres are descended from giants. They are large and are not unintelligent.  Ogres are both vain and lazy which often gets them nowhere when bullying others for their food, land or wealth. They can shape shift into previously seen creatures, but are limited by that creatures size and/or abilities and can only change for a limited time. They can even change into humans. Ogres are solitary. They tend to inhabit large, vacant facilities such as mansions, factories, hospitals and other massive buildings that can house their size.
* photo courtesy of Arthur Spiderwick's Field Guide

Shrek is quite a different beast than above, but he is still an ogre! Albeit a lovable and cantankerous one. Shrek lives in a swamp and loves to be left alone, but he is constantly getting himself mixed up in these crazy adventures in fairy tale land. The Shrek movies are incredible and the perfect films for both kids and adults. Shrek is also coming out with a new website! Check it out ~ www.shrek.com
* photo courtesy of My SA Blogs