(1) Field of Dreams - Dudes with father/son issues weep at the end of this one... Those who don't usually weep anyway.
(2) Pride of the Yankees - Great recreation of Gehrig's goodbye speech
(3) Bull Durham - Hilarious and the only movie about the minor leagues
(4) Major League - funny... a lot of great lines
(5) Bad New Bears (both) - best little league movie(s) The original is better overall but the other is worth watching for Billy Bob Thorton's performance
(6) For the Love of the game - real under-rated IMO
(7) The Natural - great ending
(8) The rookie - good acting all around, true story
(9) The Big Lebowski - no baseball, but it's my avatar so I use it. Maybe the funniest dialogue of all time. Bombed at the box office but a cult following now, conventions, midnight sold out show, gotta watch if you've never seen it. Gotta watch again if you have seen it.