Fourth Of July box office was even lower across the board than the studios expected. But the 5-day domestic holiday weekend blasted off with something for everyone: families, fanboys, and adults fed up there's been almost nothing for them in movie theaters. Fox's Ice Age 3-D: Dawn of the Dinosaurs opened very promisingly with $14 million Wednesday, $11.5M Thursday, $17M Friday, and $11M Saturday from 4,099 venues for a $43M 3-day weekend -- a photo finish with Transformers 2.