Here is the audio to the original Tom-Cruise-free War of the Worlds radio broadcast. Also check out this Wikipedia article on the chaos after the infamous first broadcast. The article lists a number of good links including this free Darkhorse e-comic adapatation (my update).
I know that I have been a little hard on Tom Cruise this week, but I recently saw Elizabethtown and I am holding him personally responsible. Maybe he liked Garden State, but thought it needed a 25 minute phone conversation in the middle. Or maybe he thought Zach Braff was too much of an alpha-male and wanted to soften the main character.