BOX OFFICE: Tom Cruises

Mission accomplished for Tom Cruise. The megastar’s new megamovie “M:I-2” made megabucks, grossing $71.8 million for the four-day holiday weekend, per estimates released today.

According to box office tracking firm Exhibitor Relations, the opening is the second-biggest ever for Memorial Day weekend, behind only “The Lost World: Jurassic Park,” which took in $90.2 million in 1997.

Since bowing Wednesday, “M:I-2” has grossed an overall $90.8 million.

Amazingly, after Cruise was through with the buying public, there were enough dollars to go around to some other films, too. Last week’s No. 1 “Dinosaur” bore up well, bringing in another $33.5 million for the Friday through Monday period. The Jackie Chan actioner “Shanghai Noon” — which opened to great reviews — opened in theaters to so-so business, bowing in the third spot with an estimated $19.5 million.

Elsewhere, Top Five holdovers “Gladiator” ($17.3 million) and “Road Trip” ($14 million) were the other films to crack the eight-figure mark.

Here’s a complete look at the holiday weekend Top 10, according to estimates from Exhibitor Relations:

1. “M:I-2,” $71.8 mil 2. “Dinosaur,” $33.5 mil 3. “Shanghai Noon,” $19.5 mil 4. “Gladiator,” $17.3 mil 5. “Road Trip,” $14 mil 6. “Small Time Crooks,” $3.9 mil 7. “Frequency,” $3.8 mil 8. “U-571,” $3.2 mil 9. “Center Stage,” $2.8 mil 10. “Where the Heart Is,” $2 mil