I don't know if this is just me, but I always recognize when stock audio is being used in movies or video games. There is a creaking door sound that has been haunting me for over 10 years, then there's the Willhelm scream, it's been sampled in so many films it's bordering on ridiculous. Just watch this film clip of -some- of them:
So, how about you? Do you recognize stock audio easily, have any pet peeve sounds? Or are you blissfully unaware of the same sounds being played over and over and over and over throughout your film watching life?