I'm annoy the heck out of my DH. He could make a verrry long list.
A couple of things -
He will argue about anything, and I mean ANYthing and will never, ever admit he's wrong. That's how we ended up having a ridiculous (and still ongoing) argument that the show Boston Legal is set in Philidelphia. Yes. Seriously. Of course he KNOWS he's wrong, but once he said it, there was no admitting it.
He won't turn off lights. I don't mean that he forgets, but he insists that he should always leave the light on in the bathroom for the next time he goes in there. I'll see him leave the kitchen and he won't turn off the lights and when I ask him to, he'll say, "I might go back in there later."

You can't just turn it back on? His answer is, "that's just too much trouble.