Santa-Clara comes off as arrogant to some students. I challenge every student to go talk to him in his office, he is not. He will go out of his way to help you. Don't be discouraged by some of the negative feedback. Take a chance. PSC, personality wise, has been my favorite prof. here. If he is arrogant then he is a little arrogant in a funny, cocky way. If you are sensitive or if your ego is huge, don't take his class. Inside he is really a big, cuddly, pussy cat. If you are nice, he will let you pet him. I mean look at his picture......does he look arrogant?