Casting

For Macbeth I think a younger version of Mel Gibson. That dude is the archetypal warrior, from the patriot to Braveheart, he masacres any and everything. He's also a really good actor so the character conflict roiling inside Macbeth would be expertly portrayed.

As for Lady Macbeth, I think Angelina Jolie. She's incredibly hot, the aesthetic is very important when you're developing a perception of a character. She has a harsh, severe, kind of beauty that I think compliments the personality of Lady Macbeth in the play. She would be able to "unsex" the character of Lady Macbeth harshly and smartly.