If your interests are Satanic cults, human sacrifice, a meth habit, or your upcoming book "The Columbian Drug Trade: For Fun and Profit" then they probably don't want to know that. Unusual body tricks (like shoulders that dislocate at will or your 12 toes [the hard way]) are probably also taboo. Other than that, I think most everything would go. It's all up to you how open you want to be.