My problem is that I have such a wide variety of interests. I've even kept shadowing after being accepted because I just can't decide. I always wanted to do neurosurgery from the beginning, love my mentors pushing me for that discipline, get along so well with the residents, love working with my hands and neuroscience (one of my majors), and have presented research in the field as a first author at a national conference, but really want a family and life outside of work.
So I'll start off with the ones that no one has mentioned:
IM ---> Toxicology fellowship
1. Such an investigative and hunch driven discipline
2. Awesome area for chem research to develop new tests for trace toxins
3. Much like TheShaker, I've always been interested in forensics/law enforcement, too.
IM ---> Hospital Medicine fellowship
1. Love working in the hospital and seeing variety/very ill pts
2. Shift work, the impetus behind much of my thought at the moment
3. Decent pay
IM/EM Dual Boarded Residency
IM/Derm Dual Boarded Residency
My other interests that have already been mentioned include EM, Derm, IM, Gen Surg, GS -->Trauma Surg fellowship, IM --> Critical Care fellowship, and IM ---> ID fellowship.