I agree with KC's post. However, I will add a few thoughts.
The "best" residency program (and you can generalize this to medical schools) is the one in which you will be happy and do well. I can't stress that enough. There is no point in going to a "highly ranked" program if you are going to be miserable. Most people I know get jobs based on contacts made in residency, from referrals by program directors or former graduates of the program, etc. So, being in a program that "fits" where you can be outstanding and have excellent personal and working relationships with those around you is important. The only exception I make to this is in the case where the program is having academic difficulty, is on probation, or is suspect for any reason. In that case, no matter how much you personally like them, I would stay away -- I think a program's reputation clings to its graduates.
Now "fit" is extremely subjective, and unless you are in the middle of your medical school education, it is probably too early to start worrying about it for residency. You just have to see how your interests develope in school.
The value of looking at a school's match list is that it gives you an additional data point which the school is not able to manipulate to make their schools look better. The important statistics are:
1. Percentage of students matching in 1st, 2nd, and 3rd choices. Of students who listed more than 2 specialties, how many got into their first choice specialty.
2. How many students participatd, matched, and had to scramble.
3. How many students are in primary care?
4. How many matched in the most competitive specialties (ortho, derm, ent, optho, neurosurgery, radiology)?
5. How many are going out of state? How many at major universities? How many at community programs?
Good luck. It's nice to have the luxury of choices!