My Dad keeps taking really deep breaths that sound like sighs, and it sounds like he's bored all day, even when watching good programmes or films.
A cousin from Australia has stayed with us a couple of times this year (he's here now, actually), and he snores really loudly, other end of the house and doors shut you can still hear him! If he's been out on a night with relatives or someone, he comes in late, about quarter to twelve, and turns the computer on (BEEP! BEEP! WHIRRRRRRRRRRRRRRRR! BEEP! additional racket from printer if I've accidentally left it on) and is on for half an hour at least!
Worst part is the computer is on the other side of the wall to where Mam and Dad sleep, and Dad needs his sleep!