Last week, we highlighted five great moments from the Penguins/Capitals rivalry, all of which came from playoff meetings between the two sides. While that rivalry was born more or less out of those countless playoff meetings, the Penguins/Flyers rivalry dates back all the way to 1967 when the two Pennsylvania sides joined the NHL together.
Although the rivalry was relatively one sided in its early years, the hate was building and eventually came to fruition once Mario Lemieux arrived on the scene. Since then, superstars from both sides have taken on the roles of heroes and villains and the rivalry has become one of the fiercest in the NHL.