Nothing really bad, just normal cat stuff. He regularly wakes me up at inconvenient times, sometimes by kneading my head. Sometimes by running his claws down the mirror doors of the wardrobe (must get those changed). He likes to go out when it's pissing down, get muddy and then retire to bed. Our bed, not his.
He's not managed to trip me up yet, but by god does he try regularly.
I'm replacing a load of floorboards at the moment. Have to keep a careful eye out for him, as soon as there's a cat-sized hole in the floor he wants down it.