My wife and I took a "heart saver baby" course earlier this year, to learn the basics of child CPR before our first child was born. The course first covered adult CPR, then moved on to child and infant CPR. Anyhow, this little fact about 100 BPM / 'disco' rhythm being the ideal speed for chest compressions did come up during the class, and I think "Stayin' Alive" was mentioned by name!