When you hear five of anything in regards to emergency medicine, you have to think of Ken Milne who is an evidence based medicine (EBM) guru in the field of emergency medicine (EM).  He hosts The Skeptics Guide to Emergency Medicine (The SGEM) and is a major advocate in cutting down the knowledge translation (KT) window down from over 10 years to less than one year.  In true celebratory fashion for the 100th podcast, Ken came on to discuss being a skeptic by reviewing five examples of when EM got ahead of the evidence.