Cool Videos: How Batman chose his voice
This new video from Front Page Films explains a helluva lot. There's a reason Batman's voice sounds so silly!
There's a lot of these videos going around but this one might be the best one yet. Some great impressions here.
Now, if we can just figure out what's going on with Bane's voice (since Nolan's not going to be changing it anytime soon) we'll be set.