We learned that knowing is half the battle in this week’s box office, and the other half is 3D post-conversion.

Coming in at number 1 this weekend is G.I. Joe Retaliation (read our review) with $41 million. The film actually opened on Thursday with $10 million, which brings its 4-day domestic total up to $51 million.

Comparatively, the first G.I. Joe opened with a $54 million (a summer opening, mind you) and went on to gross a little over $150 million. Retaliation could be on a similar track, which will barely clear the film’s rumored $130 million budget. It’s too early to tell at this point, but a third G.I. Joe film (or even a G.I. Joe and Transformers crossover) may not be in the cards.

The Croods held pretty strong this weekend, opening in 2nd place with $26 million. It was Easter weekend after all – a surefire, family-friendly movie-going time – and with nothing else to compete with, The Croods had its pick of the litter. It is now up to $88 million in domestic grosses.

Tyler Perry’s Temptation: Confessions of a Marriage Counselor comes in at number 3 with $22 million. As far as Tyler Perry movies go, a $22 million opening puts the film somewhere in the middle of the director’s 13 films – not the most successful, but certainly not the least successful either.

Last weekend’s surprise hit, Olympus Has Fallen, comes in at number 4 this weekend with $14 million. A $54 million tally over two weeks certainly isn’t bad, especially for a film that had really low expectations prior to release.

Oz the Great and Powerful rounds out the top 5 with $11.6 million. The Disney film is just barely under the $200 million mark ($198.2 million), and climbing.

The big screen adaptation of Stephenie Meyer’s The Host (read our review) comes in at number 6 with a disappointing $11 million. While the Twilight author is used to seeing opening weekend numbers around the $90 million range, this film will be lucky to pull in $40 million total.

Although Stephenie Meyer may be working on a sequel to The Host, we would be surprised to see Open Road Films move forward with the property. Apparently, parasitic aliens can’t hold a candle to teenage vampires and werewolves.

Halle Berry’s thriller The Call comes in at number 7 with $4 million, which brings its total up to $39 million. Another surprise hit for March, this film far outperformed expectations.

The Tina Fay and Paul Rudd comedy, Admission, comes in at number 8 with $3 million. The film has grossed only $11 million over two weeks.

Spring Breakers added another $2.7 million to its tally this weekend, which was good enough for 9th place. Harmony Korine’s satire of Spring Break culture couldn’t have hit at a better time, and the film is now up to $10 million.

Rounding out the top 10 is The Incredible Burt Wonderstone with $1.3 million, which brings its total up to a measly $20 million after three weeks. Next week: the film will pull off a disappearing act.

Outside the top 10: Derek Cianfrance’s The Place Beyond the Pines (read our review) grossed $270,000 on only 4 screens, which was good enough for a $67,000 average. The film has been getting mostly positive reviews and features high profile talent such as Ryan Gosling and Bradley Cooper, so look for it to slowly creep towards the top 10 as it expands.

[NOTE: These are only weekend box office estimates – based on Friday and Saturday ticket sales coupled with adjusted expectations for Sunday. Official weekend box office results will be released Monday, April 1st – at which time we’ll update this post with any changes.]

Source: Box Office Mojo