Then what's lighting up the Star Destroyer's bottom?

Also, for all my years of loving the Star Wars films and watching ESB, I never, ever connected the ship that takes off to the Executor to Needa. I always thought that it was just a TIE Bomber taking off... wow, that makes that shot so much cooler now!

Excelent work, Adywan, I'm looking forward to the changes-commentary-track-thing on the DVD next year because I, like shanerjedi, can't even notice all of the changes (for example, I have no clue what changed in the asteroid field, and I've loved the movies since I was four).