i guess it depends on how the experience goes. i know that my g.p. is absolutely miserable being a physician. he sees 8 billion people a day, spends like 3 minutes with each patient, etc. every time i've gone for my physical over the past few years, he's tried his best to convince me not to become a physician. in any case, obviously not all g.p.'s are miserable. but, it is a really tough gig, these days, to be a g.p. i think shadowing different types of docs would be great, even if you have a wonderful experience following the g.p. i have been working in a pathology lab this year and i'm pretty amazed at how much more interesting and diverse pathology is than i had originally suspected. clearly, you'll get the exposure to different fields in medical school. but, for now, shadowing different physicians will (hopefully) give you a little hint of the range of possibilities out there and will give you some things to feel excited about. best of luck. i hope your experience is a good one.