Though how do I decide where to go?
http://www.cherrycrestfarm.com/cornmaze.asp [the only one of these I've seen a particular recommendation for]
http://www.windingbrookfarm.com/
http://mvmaze.com/
http://www.mastmaze.com/
http://www.cornmaze.com/mq_location.asp?ID=20
http://www.snipesfarm.com/activities/corn-maze.htm
http://www.scarecrowhollow.org/