Damnit this is a good debate to have at your local bar or pub. You order a couple beers with your buddies (or even the nearest stranger) and begin debating the merits of Bull Durham vs. Field of Dreams (do you prefer laughing with Kevin Costner or crying with him?) You move on to women playing baseball vs. kids playing baseball (League of Their Own vs. Sandlot) and then profess your love for either Roy Hobbs in The Natural vs. Roger Maris in 61*. I don't think there's any other sport that has as many great movies made about it that open up the opportunity for debate, discussion and disaggreament.
Here's a great 16-seed bracket of the the greatest baseball movies of all-time. Make your vote, make your argument.