A slightly rushed Comic-Con box office preview….

This week sees the release of three movies with a certain degree of box office potential, middling-to-awful reviews, and little hope of outdoing the projected $31 million-floor for “Harry Potter and the Half-Blood Prince.” The most likely runner-up, says THR‘s Carl DiOrio, is “The Ugly Truth,” which got a facially challenged 08% “fresh” rating from Rotten Tomatoes. DiOrio says the tracking augers about $20 million worth for the R-rated comedy featuring beefcake Gerard Butler and beauty Katherine Heigl.

Guinea PigAlso hitting theaters is the 3-D CGI animated “G-Force,” a critically derided action-comedy focusing on what Jason Zingale terms “the goldfish of the rodent world.” This one, of course, has the benefit of family appeal, and 3-D doesn’t seem to be hurting movies these days. Variety is calling $20-30 million, and I personally wouldn’t be surprised to see either a photo finish or a minor upset here with “The Ugly Truth.”

Orphan” has aroused some minor controversy and outright disdain with its horror variation on the old “Bad Seed” storyline, but apparently its tracking (whatever that is, I’m still trying to figure) isn’t showing all that strongly. Ironically. This is actually by far the best reviewed of the three new releases, with a not-even-close-to-steller 50% “fresh” RT rating. Everything is relative.

Finally, a couple of smaller films are continuing to gradually grow wider as they show some promise of breaking through. Kathryn Bigelow’s highly acclaimed and buzz-heavy “The Hurt Locker” continues to roll on to what I’m guessing is a more than possible “Best Picture” nomination given the doubled number of slots this year. “(500) Days of Summer” is already experiencing what may be the start of a small critical backlash, which is seemingly inevitable with successful indie comedies. Given the track record of “Juno,” “Little Miss Sunshine,” etc., this is probably a good sign, commercially speaking.