robots march to us cinema summit animated movie robots has opened at the top of the us and canada box office chart  taking $36.5m (£19m) on its first weekend on release.  featuring the voices of ewan mcgregor  halle berry  robin williams and mel brooks  robots follows a robot inventor who moves to a big city. vin diesel s family comedy the pacifier fell to the number two spot  taking $18.1m (£9.4m). new bruce willis movie hostage opened at number four with $9.8m (£5.1m).  however  a recut version of mel gibson s the passion of the christ  which featured less violence than last year s original movie  took just $239 850 (£125 000)  despite opening in 957 cinemas. the new version of the film received little publicity and the original version is available across the us on dvd.  we certainly had higher expectations than what we got   said rob schwartz  head of distribution for newmarket films  which released the passion of the christ.  we were trying to get the film out there  hoping it would reach an audience that it didn t quite reach the first time around. it doesn t seem to have worked out quite as well as we had hoped.  meanwhile  will smith comedy hitch has become the top film at the global box office after taking an estimated $30.1m (£15.6m) over the weekend at cinemas outside north america  according to industry website screen daily. it has taken $65.5m (£34.1m) so far  buoyed by opening at number one in the uk last weekend and a successful run in germany. the movie  which cost a reported $70m (£36.4m) to make  has taken $138m (£72m) in the us so far.