Chances are "X-Men: Days of Future Past" will be a superhero at the box office over Memorial Day weekend. But it will have to gross more than $100 million to top these movies that have had the biggest openings over the four-day holiday weekend, according to BoxOfficeMojo.com.
PIRATES OF THE CARIBBEAN: AT WORLD'S END (2007) -- Despite poor reviews, the third film in the swashbuckling franchise raked in a pirate's booty of $139.8 million in its first weekend.
INDIANA JONES AND THE KINGDOM OF THE CRYSTAL SKULL (2008) -- It had been 29 years since Harrison Ford played Indy, and Memorial Day audiences welcomed him back to the tune of $126.9 million
X-MEN: THE LAST STAND (2006) -- The "X-Men" sequel scored an X-cellent opening gross of $122.8 million.
FAST & FURIOUS 6 (2013) -- Fans of the auto franchise got revved up for this installment, which took in $117 million its first weekend.
THE HANGOVER PART II (2011) -- The hard-partying "Hangover" guys tied one on in Thailand for this sequel that soaked up $103.4 million on its initial weekend.