My phone uses 'Back in Black' by AC/DC as a tone for incoming SMS. It goes off quite a bit - thanks to work and friends ... Because it goes off fairly often LGR started humming the main riff while playing his computer the other day :-)
I asked him where he knew the song from and he explained that it was from my phone. I played him the full song and he loved it. He loved it so much that the asked me:
"Dad - you know that CD you're going to make me? The one with Powderfinger and Silverchair and Keith Urban? Can you put ABCD on it as well?"
I had a chuckle :-)