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"Pirates of the Caribbean: On Stranger Tides" has claimed the first position at box office. The comedy movie, which stars Johnny Depp, opens strong with $90.1 million. Although it secures the top rank, the fourth film of the "Pirates" film franchise falls short of the previous two "Pirates" movies. In 2006, "Pirates of the Caribbean: Dead Man's Chest" grossed $135.6 million, while 2007's "Pirates of the Caribbean: At Worlds End" debuted with $114.7 million.

Taking the second place is "Bridesmaids". The Paul Feig-directed movie remains at the position, although obtaining only $20.8 million or falling 20.4|percent| from last week's cume. Thus, the film gains a total cume of $59.3 million. In the meantime, "Thor" fails to maintain its power at box office. After ruling the chart for two consecutive weeks, the PG-13 superhero film drops to the third place by gaining $15.5 million, and reaching $145.4 domestically after three weeks.

"Fast Five" drops a slot to number four. The action film, which has Vin Diesel reprise his role as Dom Toretto, grosses $10.6 million on its fourth weekend. Trailing behind the car racing-themed movie is animated film "Rio", which secures the fifth rank by obtaining $4.7 million.

Top Ten Movies at Box Office for May 20-22:

1. "Pirates of the Caribbean: On Stranger Tides" - $90.1 million
2. "Bridesmaids" - $20.8 million
3. "Thor" - $15.5 million
4. "Fast Five" - $10.6 million
5. *"Priest" - $4.8 million
6. "Rio" - $4.7 million
7. "Jumping the Broom" - $3.7 million
8. "Something Borrowed" - $3.5 million
9. "Water for Elephants" - $2.2 million
10. "Madea's Big Happy Family" - $1 million

*UPDATE (May 22, 2011): When the final figures came out on Monday, May 22, "Rio" dropped another slot to the sixth. Hence, it swapped place with "Priest", which now secured the fifth position on the chart.