I mostly really like the trial, just because of the fun you can have manipulating it with your actions on the fairgrounds. Each juror is tied to a specific key (yes, even the one that everyone thinks is "random". He's not), and you can really have fun with it, especially with the extra scenes from the NPCs.
Plus, the trial music is epic, and I love the time-travel tie to it.
Medieval times, after you rescue the Chancellor: "We have to create a criminal justice system to deal with threats to the royal family."
Modern times: You get put on trial for abducting the princess. If only you hadn't rescued the real Chancellor (actually, he breaks free anyway, but still).