We went to the San Diego Old Globe on Saturday to see Macbeth. (For some reason, the Shakespeare Festival productions play in the outdoor theater instead of in the Globe. Brrrr.) Afterwards, we couldn't help wondering if the scene with Banquo's ghost was normally played for laughs--not the ghost itself, that is (the effect, while simple, was quite eerie), but Lady Macbeth's attempts to explain her husband's mental derangement. Thomas DeQuincey famously suggested why it was important to follow the murders with the Porter's appearance, but I'm not sure that there's an equally good dramatic reason to interlock horror and comedy during the banquet scene.
Still, it was a strong production overall, with genuinely creepy witches and a powerful Lady Macbeth (extremely effective in the sleepwalking scene). Macbeth himself sometimes betrayed a tendency to gabble his speeches, but he did well at conveying Macbeth's collapse into the madness of sin. The only downside was the curse of the Scottish play, which manifested itself when I woke up the next morning with a code in my node.