What are your pet peeves?

[Tramspotter]

My number one grip about unthoughtful roomate... Ok so you can't fathom putting a dirty dish into a empty dirty dishwasher... and It is impossible for you to take advantage of a hot teflon pans ease of cleaning morning egg residue with a paper towel. And you have to have a few personal items and all your junk out to ruin the chi of the common areas

But for the love of god do you have to use my nice chef knife to cut butter or cheese or whatever and leave it dirty... Come on!!!!!