Jennifer Garner does a great job of portraying the wide-eyed innocence of a child in this romantic comedy that I love to watch over and over again. It's a great romantic comedy, one of the cuter/sweeter ones out there, and while sure, it doesn't add anything new to the genre and follows the standard romantic comedy formula, there is just something about it that sucks you in, and brings you back for more.
The pairing of Jennifer Garner and Mark Ruffalo was a good choice, the writing is good, the acting is good, there is some great classic music in the film, and I love the "Big"-type movie in a newer age, and with a girl.