I realize this is in no way, shape, or form important to my general knowledge base, but hell....I'm curious.

Which foot do you unclip when you're stopped/at a light and are you right foot or left foot dominant?

I always unclip my left foot. I chalk this up to years and years of snowboarding and being used to having my right foot clipped in all the time while using my left to push off the lift, etc.