Definitely, Maybe (2008)

The premise is a bit cheesy, but somehow works in this little romantic comedy. Abigail Breslin is a precocious but interesting child actress, and Ryan Reynolds can be very charming in the right sorts of roles. As he tells the story of the women he encountered, I found myself somewhat interested in them and wanting to know what happened. It took a turn I didn't expect toward the end, turning it from what could have been a silly, sappy romance into a much subtler look at how our memories feed into our perception of today. Except it wasn't nearly as artsy as that sentence makes it sound. Very watchable, nothing to write home about. 3.5 stars.