I once had a course that had 3, you've read that right : three final exams.
It was an anthropology class which had a lab section.
It had:
1 Lecture final (all multiple choice I believe)
1 Lab final (some multiple choice and some short answer questions)
1 Lab practicum (you had to walk around the room, examine presentations and state their name, purpose, function, etc.)
this really sucked - it was the only class I ever took that had this