Mr. O'Neill was THE most frustrating professor/educator I have ever encountered. To say that he is disorganized would be an understatement. His slides were not very helpful, and even when his slides would present a problem, he would have an error in the numbers or misplacement of the numbers.
He is brilliant, but I felt like he had difficulty trying to say what he meant. I sat in the front row at every lecture without distraction and still struggled.

He means well but he is too jumbled. Also, his final was unbearably long, and in the middle of the final made an announcement admitting this mistake.

quirky but brilliant. go to your discussion section every week and you will be fine. oneill is a sweet guy, but hard to follow sometimes. he's a genius though just not the best at articulating certain aspects of the course.

What can I say, the only thing that bothers me about Prof. O'neil is that he only teaches two UG courses. He isn't the most organized professor (even refering to himself as an "absent minded professor"), but he is a great professor. This was my second class with him and I have to say his lectures are enjoyable, not because they are nec. interesting, but because the guy has a great sense of humor. If you are looking for a very manageable A, he is the professor for you. Around 40% of the class gets some sort of A. The grade consists of participation in discussion, 7 short assignments, a midterm and a final. If you are obsessed about knowing exactly what grade you are getting in the class while you are taking it, do not take his class. He does not figure out letter grades until the quarter is over. His midterm and final are relatively easy. He provides a study guide for both and even conducts an optional after hours study session for the final. You really can't go wrong taking his class.