I got my major in Interdisciplinary Studies, and at Cal, you basically choose a focus, take classes related to that focus and then write a thesis. I've had no problem getting whatever job I wanted since. I called a few medical schools, and they thought it was interesting. (I focused on psychobiology, did my thesis on the DSM as a flawed nosological system.)
I got a BA, btw. And I doubt that schools will have any more issue with this major than any other.
S.