I think the suit and tie is pretty much standard for males. At my SUNY interview, one professor was wearing a suit, one only had a shirt and tie, and the third had pants, a shirt and a lab coat. I would suggest keeping it simple, but if you like to flash it up a bit with a colorful tie, I think that would be fine.
Pretty much, I think you should just wear something that is presentable and looks nice. A suit is definately ok. I wore a pair of dress pants with a shirt and tie with a v-neck sweater over the shirt. Went for the preppy look. Nothing is standard, just look nice in your own way!