While "Pineapple Express" failed at knocking "The Dark Knight" from its first box-office position, it appears that “Tropic Thunder” succeeded in doing that.

"The Dark Knight" stayed in the number one spot at the box office for four straight weeks knocking "Shrek 2" down from the third position on the all-time U.S.A. box-office charts with $471.5 million since it opened on July 18, behind "Titanic" ($600.8 million) and the original "Star Wars" ($461 million).

Over the weekend another movie from the “Star Wars” saga, an animated picture from Lucas Film, was on the third place with $15.5 million.

But the absolute highlight of the weekend was Ben Stiller’s “Tropic Thunder” took in an estimated $26 million at the weekend box office, knocking “The Dark Knight” out of the No. 1 spot. Thus the comedy distributed by Viacom Inc.'s Paramount Pictures brought its five-day estimated total from Wednesday's opening to $37 million. According to studio research, 57% of the audience was male while 67% was 25 or older.

“Tropic Thunder” features notorious names like Ben Stiller, Jack Black and Robert Downey Jr. The action takes place in the jungles of Vietnam, where a not so very talented director is trying to make a war action movie. Because things don’t go as planned and he looses control, he drops the actors somewhere in the jungle with the script in their hands. He tells them there are cameras everywhere, gives them a map, and abandons them to survive the jungle. Despite its making fun of everything from Vietnam veterans to Russell Crowe the movie is a bundle of joy.