i graduated med school in 1993 and have been a family physician for 20 years.
the short answer is that it can't hurt. in general, you really want to take as many pre-med courses during college as possible. personally, i was able to take biochemistry and physiology during college but not anatomy.
i did, however, go to a summer program for college pre-meds at a medical school that had us dissecting cadavers part of the time.
i can't say that a whole lot of anatomy knowledge sank in. what i can say is that it gave me a good preview of the whole experience. so i learned what to wear, what each of the tools were for, some of the terminology, how to respect the cadaver, how to get the formalin smell out of your body, etc.