SHOW BIZ: Weekend Movie Box Office Estimates: May 20-May 22, 2011

Rank	Film	Distributor	Weekend Total	# Of Screens	Weeks Playing	Cumulative Box Office
1	Pirates of the Caribbean: On Stranger Tides	Buena Vista	$90,100,000	4,155	1	$90,100,000
2	Bridesmaids	Universal	$21,058,000	2,937	2	$59,518,000
3	Thor	Paramount	$15,500,000	3,924	3	$145,406,000
4	Fast Five	Universal	$10,631,000	3,622	4	$186,219,000
5	Rio	Fox	$4,650,000	2,593	6	$131,647,000

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

1. "Pirates of the Caribbean: On Stranger Tides:" Produced by Jerry Bruckheimer and directed by Rob Marshall, 'Pirates of the Caribbean: On Stranger Tides' captures the fun, adventure and humor that ignited the hit franchise--this time in Disney Digital 3D. -moviefone.com

2. "Bridesmaids:" This spring, Universal Pictures and producer Judd Apatow '(Knocked Up,' 'The 40-Year-Old Virgin') invite you to experience 'Bridesmaids'. Kristen Wiig leads the cast as Anniem a maid of honor whose life unravels as she leads her best friendm Lillian (Maya Rudolph), and a group of colorful bridesmaids (Rose Byrne, Melissa McCarthy, Wendi McLendon-Covey and Ellie Kemper) on a wild ride down the road to matrimony.

Annie's life is a mess. But when she finds out her lifetime best friend is engaged, she simply must serve as Lillian's maid of honor. Though lovelorn and broke, Annie bluffs her way through the expensive and bizarre rituals. With one chance to get it perfect, she'll show Lillian and her bridesmaids just how far you'll go for someone you love. -moviefone.com

3. "Thor:" Exiled to Earth after his arrogance fans the flames of an ancient conflict, The Mighty Thor (Chris Hemsworth) of Asgard discovers the meaning of humility when a powerful old foe dispatches a destructive force to crush humanity. Only when the banished prince has defeated an opponent capable of crushing him in battle will he learn what it takes to be a true leader. Anthony Hopkins, Natalie Portman, Stellan Skarsgård, and Tadanobu Asano co-star in a comic-book adventure from acclaimed director Kenneth Branagh. - Jason Buchanan, Rovi

4. "Fast Five:" Vin Diesel and Paul Walker lead a reunion of returning all-stars from every chapter of the explosive franchise built on speed in 'Fast Five. In this installment, former cop Brian O'Conner (Paul Walker) partners with ex-con Dom Toretto (Vin Diesel) on the opposite side of the law. Dwayne Johnson joins returning favorites Jordana Brewster, Chris "Ludacris" Bridges, Tyrese Gibson, Sung Kang, Gal Gadot, Matt Schulze, Tego Calderon and Don Omar for this ultimate high-stakes race.

Since Brian and Mia Toretto (Brewster) broke Dom out of custody, they've blown across many borders to elude authorities. Now backed into a corner in Rio de Janeiro, they must pull one last job in order to gain their freedom. As they assemble their elite team of top racers, the unlikely allies know their only shot of getting out for good means confronting the corrupt businessman who wants them dead. But he's not the only one on their tail.

Hard-nosed federal agent Luke Hobbs (Johnson) never misses his target. When he is assigned to track down Dom and Brian, he and his strike team launch an all-out assault to capture them. But as his men tear through Brazil, Hobbs learns he can't separate the good guys from the bad. Now, he must rely on his instincts to corner his prey...before someone else runs them down first. -moviefone.com

5." Rio:" 'Rio' is a 3-D animation feature from the makers of the 'Ice Age' films. Set in the magnificent city of Rio de Janeiro and the lush rainforest of Brazil, the comedy-adventure centers on Blu, a rare macaw who thinks he is the last of his kind. When Blu discovers there's another -- and that she's a she -- he leaves the comforts of his cage in small town Minnesota and heads to Rio. But it's far from love at first sight between the domesticated and flight-challenged Blu and the fiercely independent, high-flying female, Jewel. Unexpectedly thrown together, they embark on an adventure of a lifetime, where they learn about friendship, love, courage, and being open to life's many wonders. 'Rio' brings together a menagerie of vivid characters, a heart-warming story, colorful backdrops, energizing Latin and contemporary music, and family-friendly song and dance. -moviefone.com