Yes, I imagine right about now the folks at Marvel Productions are sporting grins wide enough to swallow their own ears. Iron Man held the number one spot for two weeks in a row, taking in $177 million since its release last week, making it the top grossing film of 2008 so far. The superhero blockbuster pulled in more than last week's two new releases combined, with Ashton Kutcher and Cameron Diaz's comedy What Happens in Vegas edging out the Wachowskis more family-friendly adaptation of Speed Racer. Here's the final tally.

1. Iron Man: $51.1 million
. What Happens in Vegas:$20.1 million
. Speed Racer:$18.5 million
. Made of Honor:$8.1 million
. Baby Mama:$6.2 million

Just one solitary new release for this week. Will it be enough to dethrone Marvel's golden avenger?

The Chronicles of Narnia: Prince Caspian
What's It All About: A year has passed since the events of The Lion, The Witch and the Wardrobe, but when the Pevensie siblings return to the world of Narnia, they find that 1,300 years have gone by and the land is under the tyrannical rule of King Miraz, though young Prince Caspian is the rightful heir to the throne.
Why It Might Do Well: Being the sequel to a successful flick ($65 million opening weekend with a total of $744 million worldwide) and the only major release hitting U.S. theaters this week, things are looking good for the Narnian economy. And the 88% fresh rating at can't hurt.
Why It Might Not Do Well:
I suppose if another Grand Theft Auto game should suddenly come out...
Number of Theaters: 3,800
Prediction: $65 million