HBO "Knock Knocks" Into The Spotlight With Flyers, Rangers.

This article first appeared on Bloguin's national NHL blog, Puck Drunk Love.  J.P. Quayle is a staff writer for Puck Drunk Love and manages the hockey blog Ice the Office.  HBO's 24/7 series has received acclaim from all over the sports world.  This latest version follows the Flyers and Rangers in the lead-up to the Winter Classic.  Here's JP's take on the first episode... Everybody please put your thumb in the air. HBO is back for round two. Last night HBO's Documentary series "Road to the Winter Classic" kicked off with the first episode of a four part series that features the New York Rangers and the Philadelphia Flyers. Both teams are set to face off in the 2012 Winter Classic, which will take place in Philadelphia at Citizens Bank Park. This marks the second time that the National Hockey League has allowed cameras to pry into the lives of its players and coaches. After a wildly successful experiment last year, it was impossible to say no to a...