We had some people dress as the Power Puff Girls and Professor whatever; the MCAT (cat w/ M on shirt), PCAT (cat w/ P on shirt), and LSAT (cat w/ M on shirt, sitting during a skit) - M,P, and L were also the ppl's first initials; a giant banana, and Harry Potter, among other things.
My dosage/compounding professor dressed as Professor Snape. He thought that the potions master was closest to his role in teaching us.
I am now watching the lecture for today (11-8). He is out of town, so he pre-recorded our lectures for this week. Although, Halloween is over, he is lecturing in a full length lab coat which has a holstein (black & white) cow pattern.