"In the original theatrical version, when C-3PO is firing on the Jedi, he said "Die Jedi, Die Scum." The word "scum" was removed from all subsequent versions. In fact, if you listen closely to the current DVD version, you can still hear 3PO begin to make the "s" sound before his voice cuts out."
and also:
"The DVD edition of "Attack of the Clones" features several small additions to the theatrical version of the film:
In the Lars Homestead, after Anakin has confessed his slaughter of the Tuskens and slumped to the floor, Padmé states, "To be angry is to be human," and Anakin responds, "I'm a Jedi! I know I'm better than this!"
Before Jango Fett is killed by Mace Windu, the sparks coming out of his damaged jetpack are much more visible.
After falling from the gunship and eventually awakening, Padmé replies to the Clonetrooper's question of concern with a painfilled "Uh-huh" instead of "Yes."
During the wedding scene, the Digital cut's moment of Padmé taking Anakin's hand has been inserted instead of a shot of Anakin's false arm and a pan up."