"Fifty Shades of Grey" dominated the box office this weekend, bringing in $81.7 million in its first three days of release. That's the best Presidents Day opening weekend of all time . . . the second-biggest February debut ever . . . AND the fourth-biggest R-rated debut in history. The only other big release was the spy thriller "Kingsman: The Secret Service" . . . it debuted in 2nd place with $35.6 million. Here are this week's Top 10 movies:

1. NEW: "Fifty Shades of Grey", $81.7 million.

2. NEW: "Kingsman: The Secret Service", $35.6 million.

3. "The SpongeBob Movie", $30.5 million. Up to $93.7 million in its 2nd week.

4. "American Sniper", $16.4 million. Up to $304 million in its 8th week.

5. "Jupiter Ascending", $9.4 million. Up to $32.6 million in its 2nd week.

6. "Seventh Son", $4.153 million. Up to $13.4 million in its 2nd week.

7. "Paddington", $4.15 million. Up to $62.3 million in its 5th week.

8. "The Imitation Game", $3.5 million. Up to $79.7 million in its 12th week.

9. "The Wedding Ringer", $3.4 million. Up to $59.7 million in its 5th week.

10. "Project Almanac", $2.7 million. Up to $19.6 million in its 3rd week.