Vanity Fair has a great interview up with The Empire Strikes Back director Irvin Kershner where he discusses all sorts of cool stuff about the Greatest Movie Ever Made. In it we learn a lot more about the famous “I Know” line. Every Star Wars fan knows how that came about and the “I love you, too” bit was dropped, but Kershner goes into a lot more detail on the story such as how he and Lucas disagreed over it and how George was ultimately convinced it was the right line. Most importantly, however, is the revelation that he would’ve directed one of the Prequels had Lucas decided to make them ten years after the Original Trilogy:
I remember reading in 1983 that George was going to take two years off, then take three years to make the first prequel, which would be released in 1988. If that had actually happened in 1988 (instead of 1999), would you have considered directing one of the prequels?
Ten years later, I would have said yes to directing one of the prequels.
You can check out the full interview here.