Haha everything? If it's someone I care about I constantly apologize if there's any kind of friction or anything. Had a bad day? I'm sorry. I don't agree with you? I'm sorry. You don't like the smell of cinnamon and I have a cinnamon and clove scented candle in my apartment? I'm sorry. :P
On the other hand, if you aren't someone I care about I take much less responsibility (because I feel much less responsible). In fact, I'm more likely to basically say go f*ck yourself if the situation is anything past showing universal concern (sorry to hear you lost your mother, etc).
In the last few days, apology highlights include:
I'm sorry (for liking Philadelphia rolls)
I'm sorry for being so f*cked up.
I'm sorry you feel like I'm not listening
I'm sorry I can't do that
I'm sorry I can't do more
I'm sorry (for being sick)
I'm sorry (for not eating my icecream faster, even though I got mine after you got yours)
I'm sorry (I sound sick to you)
I'm sorry (I've been avoiding grading papers)
I'm sorry (I've been avoiding planning out the next few weeks of class and subsequently your homework)
I'm sorry I had a family emergency and was unable to be contacted
I'm sorry you had a bad day
I'm sorry I haven't gotten that to you yet
I'm sorry (for not getting the room you asked me to do done)
I'm sorry (you couldn't get your phone)
I'm sorry my knee hurts