The Fourth of July holiday provided plenty of fireworks at the box office as Transformers: Revenge of the Fallen [TFRM2] battled Ice Age: Dawn of the Dinosaurs [ICEA3] to a standstill. Both Transformers and Ice Age were estimated to have grossed $42.5 million over the weekend. Although its second weekend dropped 61%, the Transformers sequel has already amassed $293.5 million in 12 days. The third Ice Age has advanced $67.5 million since opening on Wednesday.
Public Enemies [PUBNM] earned $26.2 million to chart in third place. The gangster drama starring Johnny Depp [JDEPP] has banked $41.0 million since also opening on Wednday.
| Rank | TITLE | F-S-S | TOTAL |
| 1 | ICE AGE: DAWN OF THE DINOSAURS | $42,500,000 | $67,506,157 |
| 2 | TRANSFORMERS: REVENGE OF THE FALLEN | $42,500,000 | $293,459,000 |
| 3 | PUBLIC ENEMIES | $26,171,900 | $41,044,105 |
| 4 | THE PROPOSAL | $12,779,000 | $94,233,000 |
| 5 | THE HANGOVER | $10,415,000 | $204,197,000 |
| 6 | UP | $6,579,000 | $264,873,000 |
| 7 | MY SISTER'S KEEPER | $5,255,000 | $25,964,000 |
| 8 | THE TAKING OF PELHAM 123 | $2,500,000 | $58,471,000 |
| 9 | YEAR ONE | $2,100,000 | $38,088,000 |
| 10 | NIGHT AT THE MUSEUM: BATTLE OF THE SMITHSONIAN | $2,100,000 | $167,762,635 |
Tag(s): TFRM2, ICEA3, PUBNM, JDEPP