Bryan's big thing is the stove. Even though I know he checks it, I have to check it, too. Because he always asks me, "Is the stove off?"
Him: "Are you sure."
Me: "Yes" - although, on occasion, I've been known to say, "No." just to toss things up.
There really isn't too much about us that's "safety freak". But when we go away on vacation I always make sure unnecessary appliances are unplugged (fans, tv, computers, etc). Once when I was in High School and we went out of the country, our cat had somehow managed to vomit into (yes, INto) the TV. We came home to the most rancid smell that permeated the whole house for weeks until we found out what the problem was. It shorted the TV, needless to say.