According to The Hollywood Reporter, whether or not they're an off-screen couple, Brad Pitt and Angelina Jolie had enough on-screen chemistry to lift their assassin tale Mr. and Mrs. Smith to a robust $51 million opening weekend, according to studio estimates Sunday.

The other new wide releases, The Honeymooners, The Adventures of Sharkboy and Lavagirl in 3-D and High Tension, opened weakly, contributing to Hollywood's 16th-straight weekend of declining revenues compared to last year.

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Mr. and Mrs. Smith debuted amid a tabloid fury about whether Pitt and Jolie were an item. Pitt and his wife, Jennifer Aniston, separated in January after 4 1/2 years of marriage. Aniston filed for divorce in March. In the movie, Pitt and Jolie play a husband and wife who discover they are rival assassins. In real life, they have been coy about their relationship, declining to confirm or deny if they are involved. The publicity probably helped draw in crowds, though Mr. and Mrs. Smith also earned fairly solid reviews.