I love Oakley for many of the same reasons everyone else here does. They make a durable long lasting product that is the top of its class. There is a style and design for every occasion and nothing is better when you see the look on someone's face when they see another new crazy pair you got.
I love Oakley's because not only are they great optics but some glasses have charities assigned to them. Gotta love it when a company gives back. Not to mention limited edition glasses!