Batman was a weak opening...
but not bad for the fifth time the movie was made with one script.
Year Movie Opening Weekend Avg Ticket Total Viewers
1989 Batman $40.5 million / $3.99 = 10,150,375
1995 Forever $52.7 million / $4.35 = 12,114,942
1997 Robin $42.8 million / $4.59 = 9,324,618
2005 Begins $46.6 million / $6.75 = 6,903,703
I haven't been to see it yet.