I like the growl that is administered to every video cat larger than a fat tabby. IF I ever hear that sound IRL, I won't be thinking cougar or bobcat, rather how to deter the jaguar from crushing my skull.
There is a soundbite used to dub over the top of replays in Premiership football as broadcast on terrestrial TV here in the UK. Once you notice it's exactly the same sound every time it's something you can never not notice and it's infuriating! There are a few whoops and screams in it that get me every time and make me cringe.
In this vein there's an amazing line from Man on The Moon when Kaufman refuses to let canned laughter be dubbed over his show: "That's dead people laughing! You know all those people they recorded are dead by now, right!?"