I took a philosophy of science class ("What is this thing called science") with Prof. Scerri and he was an amazing professor. His lectures were clear and truly fascinating, the readings were interesting (if extensive), and the final was VERY fair (no midterm). It was a small class and he led the discussions himself. He was very interested in what we had to say and seemed very concerned that we understood the material. I HIGHLY recommend taking a class with him! But if you've never written a research paper, make sure you talk to him about it - he requires a good amount of research and proper citations.