Continuity mistake: During the first case, when Mr. Sawhit has the first of the series' patented witness breakdowns, he angrily tosses his toupee at Phoenix. However, in the courtroom shot from behind, he still has a full head of hair.
Character mistake: When the first case's true murderer is KO'd by Phoenix's amazing attorney skills, he is carried away from the courtroom. The Judge then asks to the prosecutor, "Mr Payne, your client?" He should have obviously asked, "Mr Payne, your witness?" And that's exactly what he asks in the Trilogy remake, that fixes this mistake.