Cast-igated

There are times when I have to wonder at the lack of imagination of most casting directors these days. Now that Don Cheadle has been cast in Hotel Rwanda, I no longer have to complain about him always playing criminals. But why hasn't Sean Penn been cast in a comedy since Fast Times at Ridgemont High? Hasn't he done enough with emotionally-scarred, clothes-rending wretches? I guess you could count Sweet and Lowdown as a comedy, but will no one but Woody Allen get this man some laughs? I could go on and on about misused and undercast actors in Hollywood, so I'll save my sound and fury for another day.