I have to disagree with what has been said thus far...parts of it at least.
One person said "except the attitude towards patients is different."
I find that to be untrue, as your attitude towards a patient is based on what kind of person you are, not what kind of degree you possess.
I tell people this:
Osteopathic Medicine developed in the late 1800's when "modern medicine" wasn't all too advanced and many people were frustrated with the treatment options. This guy came along and developed a system of medicine that relied on manual manipulative treatments in order to preserve and correct the bodies natural structural alignment as a method of treating and "curing" some diseases and conditions. Although early on osteopathic medicine relied solely on these types of treatment modalities, it quickly incorporated a modern medicine model, in many ways preserving the fundamental is was founded on being "structure preserves function". Now, osteopathic physicians practice in all areas of medicine working along side MDs. They can (in many cases) sit for the same boards, train in the same residency programs, and hold the same or equivalent administrative positions. Many DOs choose not to use the skill of OMT in their practices, but some still do. Nonetheless, all osteopathic physicians will learn the basis of these treatments and techniques while in school.
That's basically what I tell people. I don't get into "MD + OMM" or "look at patients in a more holistic manner" because that is not always the case. There are MDs with a far more holistic or "patient friendly" approach to patients than a great number of DOs. (see my quote below for what "patient friendly" may mean)
So, again, don't try to put one above the other, because it just turns into a pissing contest between DO students and MD students (or, more often, DO premeds and MD premeds).
Rather, focus on the premise upon which osteopathic medicine was founded and the way it has evolved into an all-encompassing system that it is now.
Good luck.
PS: Where will you be attending school next year?