Favorite:
1) Physiology--you actually had to figure out how stuff worked instead of just memorizing facts.
2) Pathology--same as above.
3) Not a single one of them
Least Favorite:
1) Anatomy--couldn't stand the lab aspect of it.
2) Pharmacology--a complete waste of time memorizing mundane drug details that were a few seconds away in pharmacopoeia or on your palm anyway.
3) Third year rotations for me can best be described by Peter Gibbons from Office Space: "I realized, ever since I started working, every single day of my life has been worse than the day before it. So that means that every single day that you see me, that's on the worst day of my life." I hated every rotation worse than the one that proceeded it. It was a cumulative effect. The pre rounding, the rounding, the note writing, the whiney patients, the ******ed patients, the patients that didn't care about even helping themselves, stupid consults, the *****ic pages from nurses, 30 hour call, etc.