Waiting for a new season of Breaking Bad or Mad Men is a palpable ache. To fill that Walter White or Don Draper sized hole in your heart, look back.
Vince Gilligan, creator (executive producer and writer) of Breaking Bad got his start as a writer on The X-Files. Of the 30 episodes he wrote or co-wrote, Bad Blood, Drive and Pusher are among the best of The X-Files nine seasons.
Scully and Mulder interview Walter Modell in Pusher (The X-Files, 1996)
Matthew Weiner, creator/executive producer/writer of Mad Men, worked as a writer and producer for the HBO hit, The Sopranos. The Blue Comet, an episode which Weiner co-wrote with series creator David Chase, is a masterful mix of tension and carnage. What may slip under the radar is Weiner's comedic writing for Andy Richter Controls the Universe. The show was cancelled due to poor ratings, but there's a whole lot of funny in its nineteen episodes.
Run for your life in The Blue Comet (The Sopranos, 2007)