Stolen from zk273's journal with permission.
The following is based on conversations I've had with my gaming buds concerning Episode 3.
Palpatine: "Need a hand, Vader? AHAHAHAHAHAHAH!! It looks like you don't have a leg to stand on! AHAHAHAHAHAHAH!! Oh, no need to get all hot under the collar, Vader! AHAHAHAHAHAHAH!! Hey, what's wrong, Grievous? Is there something you'd like to get off your chest? AHHHH AHAHAHAHAHAHAH!! Oh, I kill me!"