Here's also a day-to-day summary of the trip, along with links to my blog entry for the day:

• Day 1 - Boston - Giants vs Red Sox - Fenway Park - (entry)
• Day 2 - New York - Mets vs. Yankees - Yankee Stadium - (entry1, entry2)
• Day 3 - New York - Yankee Stadium Tour and Twins vs. Mets - Shea Stadium - (entry)
• Day 4 - Travel day to Cooperstown and Washington DC - (entry)
• Day 5 - Washington DC - Tigers vs. Nationals - RFK Stadium - (entry)
• Day 6 - Travel day to Milwaukee and a White Castle stop - (entry)
• Day 7 - Milwaukee - Miller Brewing Co. Tour and Royals vs. Brewers - Miller Park - (entry)
• Day 8 - Travel day to Chicago - (entry)
• Day 9 - Chicago - Cubs vs. White Sox - US Cellular Field - (entry)
• Day 10 - Chicago - Rockies vs. Cubs - Wrigley Field - (entry)
• Day 11 - Travel day to Detroit - (entry)
• Day 12 - Detroit - Rangers vs. Tigers rainout - Comerica Park - (entry)
• Day 13 - Cleveland - A's vs. Indians - Jacob's Field - (entry)

And here's some opinions on the ballparks that we went to on this trip:
Best Ballpark - Hard to say. Fenway Park and Wrigley Field have great personality and charm, but the modern ballparks like Miller Park, US Cellular, Comerica and Jacob's are cool too.
Most Impressive Ballpark - Miller Park. Its a great looking park with a lot of cool features. They did this one right.
Best Fans - Yankees fans. They're brutal to non-Yankee fans but we had a lot of fun with them.
Most Loyal Fans - Red Sox fans. Without a doubt. The energy inside AND outside Fenway park is amazing.
Best food - Miller park. 5 hot dogs to choose from (regular, Italian, Polish, Brat, Chorizo) and practically every beer that Miller makes is for sale.
Best nachos - Wrigley Field. The BBQ nachos with pulled-pork were so tasty. But the Muchos Nachos in Comerica Park is a close second.
Most Family-friendly ballpark - Comerica Park. There's a food court that kids will love with a carousel in the middle of it. And there's a ferris wheel behind left field.
Least Family-Friendly ballpark - Yankee Stadium. That ballpark is cold and ominous and the language heard at Yankee games aren't kid-friendly. But the Monument Park in left-center field is cool for all to see.
Best City - New York. There's no city like it in the world. But Chicago is great in the summer too.
Best beer - All of the ballparks were pretty much the same, though Miller Park had the biggest selection...of Miller beers. We did go to the Great Lakes Brewing Company in Cleveland our last night of the trip and they had excellent beer.