Here are the current all time record box-office opening weekends (the Star Wars III numbers are an estimate, but not far off).
Is it surprising that Star Wars had a great opening weekend? No, not at all considering it’s supposedly going to be the last one ever made (it probably helps that the movie is good this time around too). What surprises me is that percentage of total number– it’s at 68.5%. Nothing else in that list comes anywhere close. Everyone was watching Star Wars, talk about a cultural event.