On this week's episode, the guys offer their take on the greatest hits of Led Zeppelin, one of the biggest influences on heavy metal. Black Sabbath may be considered the Godfathers of Heavy Metal, but Jimmy Page and company definitely left their mark on the scene as well.  Kenneth Dean and Chris each choose their 15 favorite Zep songs.  Whichever is duplicated, make the list.  The rest are debated to see which ones make the final 15.  Then they put the songs in concert setlist order for the ultimate Led Zeppelin Greatest Hits.  And they also offer their BIG 4 Led Zeppelin Songs at the end.  So sit back, relax, turn it up to 11 and let the debate begin.