If the State Fair, Brat Fest and an MLB baseball game had a baby it would be the Madison Mallards.
Lots of fun, great atmosphere, hilarious announcers, field antics between EVERY inning, decently priced food and beer... oh and a thousand things for your kids to do if they get bored and aren't leashed to their parents.
Beware, there are LOTS of rogue fly balls that go over the netting so don't look away from the field for too long... plus a lot seem to go in the concession area where you're just a sitting duck. Pun intended.