According to Boxofficemojo, Harry Potter and the Half-Blood Prince was the top film at the domestic box office over the three-day weekend. I'm sure this didn't surprise Time Warner (NYSE: TWX) shareholders. The latest installment of the popular fantasy series took in about $79 million as of early estimates. However, Prince actually opened last Wednesday. If you add in monies derived from the Wednesday and Thursday showings, you've got a gross of about $159 million so far.

This compares favorably to Harry Potter and the Order of the Phoenix, which opened in July 2007. Phoenix made just under $140 million during its five-day debut. I like such growth. It shows that the franchise retains a good quantity of demand.

So, earlier in the week, I discussed Michael Bay and his freak-out with Viacom, Inc. (NYSE: VIA) over the marketing quality on his latest film, Transformers: Revenge of the Fallen. Turns out Mike had nothing to worry about.

This film is doing great. At the time of this writing, the film was estimated to have grossed over $60 million on its opening day, which was this past Wednesday. Now, I hate talking about the breaking of this record and that record. Hollywood loves to point out that Movie X achieved the highest gross for a film released on a cloudy day in late September when the moon was full and a new supernova was spotted in the constellation of Cygnus. I'd rather talk about how much profit was achieved, and how much return on capital was recorded (too bad media companies don't have to reveal such data). Nevertheless, I'll give Viacom and Fallen credit. It apparently scored the biggest Wednesday opening ever, and it should theoretically have a great weekend, assuming word of mouth is good. So far, I've only heard superlative things about this particular piece of celluloid, and I know of one person who immediately consulted her cell phone to schedule a time to see the picture with her friends when she heard how awesome it was.

If this weekend's box office results say anything, it's that success in the movie business resists predictability. How else do you explain the money that Time Warner's (NYSE: TWX) The Hangover is grossing? I haven't seen the film, so I'm sure there's something to it. Nevertheless, it just didn't seem like it would be a big hit. Guess the word of mouth on it has been pretty good.

Hangover, as of early estimates at Boxofficemojo, took in $33 million at domestic theaters over the past three days, good for first place. It beat Disney's (NYSE: DIS) Pixar project Up, which took in about $30 million and came in second. Hangover actually was the number-one movie last weekend as well. So far, it's taken in more than $100 million.

Disney (NYSE: DIS) and Pixar have a great thing going with their new cartoon Up. Last weekend, the movie debuted in the top spot. This past weekend, Disney just might retain that number-one designation. And if it does, I can tell you that this is cool news.

It's very close. As of this writing, early estimates at Boxofficemojo credit Up with a take of $44 million for the past three days at domestic theaters. Time Warner's (NYSE: TWX) The Hangover is said to have grossed $43 million. If those numbers by any chance hold, then Up will be in first place and Hangover will come in second.