My brother and I are Wreck-It Ralph's target audience, having spent many a childhood afternoon in mall arcades. We took a couple of hours off last week to watch a matinee.
Impressively, none of the main characters is stereotypical. After thirty years, Ralph (John C. Reilly) doesn't want to be a bad guy anymore, but Fix-It Felix Jr. (Jack McBrayer), Vanellope von Schweetz (Sarah Silverman), and Calhoun (Jane Lynch) also showed capacity to stretch beyond their "day jobs".
Wreck-It Ralph isn't perfectly paced, but I appreciated the characters and plot more as the movie went on, and by the end I was hanging on every word. Definitely worth your quarters.