SHOW BIZ: Weekend Movie Box Office Estimates: July 8-10, 2011

For more information, access the complete chart on boxofficemojo.com.

1. "Transformers: Dark of the Moon:" Director Michael Bay returns to wreak more robotic mayhem in this third entry of the Transformers franchise. Penning the further adventures of the Autobots and Decepticons is Ehren Kruger, who co-wrote the second installment. Shia LaBeouf and Tyrese Gibson topline the film, with John Malkovich and Frances McDormand heading up the supporting cast. - Jeremy Wheeler, Rovi

2. "Horrible Bosses:" Colin Farrell, Jennifer Aniston, Jason Bateman, and Charlie Day star in this workplace comedy about three frustrated employees who hatch a plan to kill their micromanaging bosses, only to find their murderous plot snowballing into disaster. Seth Gordon (The King of King: A Fistfull of Quarters) directs a screenplay written by Michael Markowitz,Jonathan Goldstein, and John Francis Daley. - Jason Buchanan, Rovi

3. "Zookeeper:" In "Zookeeper," Kevin James plays Griffin Keyes, a kind-hearted zookeeper who is convinced the only way to get a girl in his life is to quit his job. The zoo animals, in a panic, decide to break their time-honored rule of not talking to humans and teach Griffin the ways of the wild so he can find a mate and stay at the zoo. -movies.about.com

4. "Cars 2:" Star racecar Lightning McQueen (voice of Owen Wilson) and the incomparable tow truck Mater (voice of Larry the Cable Guy) take their friendship to exciting new places in 'Cars 2' when they head overseas to compete in the first-ever World Grand Prix to determine the world's fastest car. But the road to the championship is filled with plenty of potholes, detours and hilarious surprises when Mater gets caught up in an intriguing adventure of his own: international espionage. Torn between assisting Lightning McQueen in the high-profile race and towing the line in a top-secret spy mission, Mater's action-packed journey leads him on an explosive chase through the streets of Japan and Europe, trailed by his friends and watched by the whole world. Adding to the fast-paced fun is a colorful new all-car cast that includes secret agents, menacing villains and international racing competitors. -moviefone.com

5. "Bad Teacher:" Some teachers just don't give an F. For example, there's Elizabeth (Cameron Diaz). She's foul-mouthed, ruthless, and inappropriate. She drinks, she gets high, and she can't wait to marry her meal ticket and get out of her bogus day job. When she's dumped by her fiance, she sets her plan in motion to win over a rich, handsome substitute (Justin Timberlake) -- competing for his affections with an overly energetic colleague, Amy (Lucy Punch). When Elizabeth also finds herself fighting off the advances of a sarcastic, irreverent gym teacher (Jason Segel), the consequences of her wild and outrageous schemes give her students, her coworkers, and even herself an education like no other. -moviefone.com