Ian McDiarmid — Scottish Actor born on August 11, 1944,

Ian McDiarmid is a Scottish character actor and director. He has appeared in 47 films since 1976. Internationally, he is most famous for his role as Palpatine in the Star Wars film series... (wikipedia)

But he did say that the character would be on the sidelines in movies One and Two, and move into the middle with number Three, but I didn't realize he would move in with quite such a bang.
I suppose it's easy to play a hypocritical politician with a smiling face; it's also quite gratifying to play.
I'm the blackest villain of all time.
It was a scene I was really looking forward to, and one that I embraced, and when we were filming it, George got closer and closer and closer with that camera - he was practically up my nose for the final shot. So I knew it was a moment that I had to do my best to get right.
That's the mark of a great storyteller, never to give away secrets in advance.