It was a busy weekend at the box office. The Memorial Day holiday period is a time when studios try to set a good financial tone for their summer slates.

And it looks like News Corp. (NASDAQ: NWS) is the winner. The media company's Night at the Museum: Battle of the Smithsonian project, starring Ben Stiller, grossed an estimated $53 million at domestic multiplexes over the past three days according to Boxofficemojo. That was a good performance. The first Night at the Museum took in $30 million in its first three days of release back in Christmas 2006.

I was surprised that News Corp. came out on top. Did anyone out there think that Terminator Salvation, from Time Warner (NYSE: TWX), wouldn't be number one?

Last week's number-one picture, Star Trek, had to yield to a newcomer this week. Angels & Demons, distributed by Sony (NYSE: SNE), took the top spot this past weekend at domestic theaters, according to Boxofficemojo. The movie is credited with $48 million as of early estimates.

Trek, distributed by Viacom (NYSE: VIA), came in second with $43 million. And I have to say, although I wasn't impressed with the movie's box-office debut, I thought that the second weekend was relatively strong. I expected a better than 50% drop for its sophomore frame. As of current data, Trek only shed roughly 40% of its opening gross. Good job (I still think the opening was weak, though). The film is close to the $150 million mark.

Viacom (NYSE: VIA) came out on top this past weekend with its new Star Trek film. According to early estimates from Boxofficemojo, the picture made roughly $72 million over the three-day period at domestic theaters.

If you include some early screenings, the total is closer to $76 million. Trek beat out such projects as Marvel's (NYSE: MVL) and News Corp.'s (NASDAQ: NWS) X-Men Origins: Wolverine, which came in second place, and Time Warner's (NYSE: TWX) Ghosts of Girlfriends Past, which took spot number three.

If Viacom's (NYSE: VIA) first-quarter earnings were a sweeps program, it probably wouldn't achieve a high rating. That's because the plot of the press release's narrative centered on one depressing theme: decline.

Let's begin at the top. Sales decreased 8% (you're about to switch the channel already, I know). Operating income was down by 22%. And adjusted income decreased 34%. Income at the media division was down 9%, and the loss in the film department nearly doubled!

But, hey, profits beat estimates, at least. According to Bloomberg, Viacom was only supposed to do around 25 cents per share. In fact, shares of Viacom rallied over 5% in the after-hours session Thursday on the news.

Last week I blogged about the premiere of the long-awaited Transformers movie and how Susan Linn, a psychologist who co-founded the Campaign for a Commercial-Free Childhood, said the movie was improperly marketed towards children.

While Ms. Lind's complaint fell on deaf ears, Transformers rocked the box-office this week with $67.6M in the box office in its first weekend and $152.5M worldwide since its opening one-week ago today – beating the original Spider-Man with the biggest first-week revenues for a non-sequel.

The Wall Street Journal believes the Transformers debut, which research firm Merriman Curhan Ford & Co said was nearly twice as strong as the studio's expectations; has a strong chance of hitting $300M in domestic ticket sales.

Could this summer hit become a franchise?

Viacom, Inc. (NYSE: VIA)'s Paramount has been without a new franchise in nearly a decade. With key cast members Shia LaBeouf and others already optioned for another movie, will Transformers be their first? The answer has to be yes: Transformers 2 is slated for 2009, according to IMDB.com. Producer Lorenzo di Bonaventura is already in talks with director Michael Bay, who kept the movie down to a $150M price-tag, half the cost of Pirates and Spider-Man sequels.

Paramount has gone without a franchise for ten years and now has the opportunity to have three by 2008. The other potentials: The Spiderwick Chronicles, directed by Mark Waters, and a new version of Star Trek directed by J.J. Abrams, although that's already an established brand name. Sadly, neither of these directors compares to Michael Bay and his re-creation of the Transformers, but the potential for a franchise is there.

While Transformers fans will wait in agony over the next two years for a sequel, Viacom's Paramount looks to be sitting pretty with dreams of being in franchise heaven. Keep an eye on the big screen to find out if Paramount's dreams come ever true.