This isn't really a pet peeve; more of a curiosity, I suppose. I heard someone on TV, commenting on an up-coming election, say, "There will be no surprises." I don't think this quite qualifies as an 'oxymoron', but it does seem in a way self-contradictory, given that a 'surprise' is, well, a 'surprise'; it would be the equivalent of saying, "Nothing unexpected will happen". Perhaps someone who has studied logic can apply a neat Latin or Greek term here ....