One word of caution. It is very helpful to look at residency programs based on specialty, if you are trying to decide where to go/apply. Making a decision to go to a medical school because it has a good CT program probably is not a good idea -- Choosing a medical school based on an four week elective you will do in fourth year. Further, if you are at a school that is hot in area, you may actually get less experience because you will have to compete with fellows, residents and visiting medical students for OR time.
This of course would not apply to MD/PHD folks, it that case the research rep is a big deal
Ed