Visible crew/equipment: When Jimmy Fallon and Drew Barrymore are taking their seats after the guy yells peanuts and crackerjacks, if you look carefully you can see some of the seats behind are actually filled with mannequins dressed with clothing. Some of them don't even have arms. (00:38:00 - 00:41:00)
Factual error: In the scene in the park where Ben does his fake proposal bit and asks Lindsey if she'll go to opening day with him, the ticket is for Tuesday April 11th. It's obviously fake for two reasons. First, the Red Sox opening day in 2004 was April 9th, not the 11th. Second, April 11th, 2004, was a Sunday, not a Tuesday.
Question: I know it wouldn't make for a very dramatic ending, but is there no way to get from the centre field seats where Lindsay was in Fenway to Ben's seats along the first line? I mean, couldn't she have just ran along a main concourse?