Obviously, the biggest release of the weekend is ‘Battleship’ (PG-13), Universal’s attempt to turn the classic board game into a blockbuster movie. Oh, and did I mention it stars Rihanna as a tattooed Navy officer? It sounds just about as cheesy as anything one can expect from the summer box office, but then again, that’s sort of the point. Liam Neeson, Alexander Skarsgard, and Brooklyn Decker also star in this sci-fi/action thriller about a fleet who must do battle with a mysterious intergalactic armada; the movie did well overseas, pulling in $170 million through April, so it could pose the first serious challenge to the box office dominance of ‘The Avengers’.

‘What to Expect When You’re Expecting’ (PG-13) is basically a rom-com about expectant parents learning the hard way that no amount of preparation will ensure things go according to plan. And while that sounds funny, the movie has gotten the ‘Valentine’s Day’/’New Year’s Eve’ treatment, with an ensemble of stars that seem to crowd the script far too much to allow a coherent storyline or genuinely funny gags. We’ll see if the movie can rise above that obstacle to produce something outside the genre box. Cameron Diaz, Jennifer Lopez, Elizabeth Banks, Chace Crawford, Brooklyn Decker, Anna Kendrick, Matthew Morrison, and Chris Rock all star.

In a much more risque vein of comedy, Sacha Baron Cohen returns to the big screen with ‘The Dictator’ (R), once again writing, directing, and starring with the apparent intent of offending quite a few people. Theoretically, the plot—about the dictator of the fictional country of Waadeya, who strives to “protect” his people from democracy—sounds like it could be pretty funny. But after Cohen’s stunt at the Oscars and the sophomore slump of ‘Bruno’, the movie might have a rocky time attracting audiences at a time of the year when R-rated comedies generally aren’t popular anyway.

The documentary ‘Marley’ (PG-13) finally arrives in theatres after multiple filming delays and three change-ups in the director’s chair (the documentary was finally finished by Kevin Macdonald). Made with the support of Bob Marley’s family, the documentary uses archive footage, interviews, and concert performances to dig into the man behind the musical legend.