In the 1990s, Sepinwall was a particular fan of the
ABC police drama
NYPD Blue and wrote reviews of the show on
Usenet newsgroups. Those reviews helped lead Sepinwall to begin a career in television journalism at
The Star-Ledger in
Newark; in 2004, Sepinwall said "without
Blue, I wouldn't have the career or the life that I currently do".
The Star-Ledger Sepinwall began working as
The Star-Ledger's television columnist in 1996. He is a member of the
Television Critics Association.
Slate.com writer
Josh Levin described Sepinwall's week-to-week, post-episode reviews of
The Sopranos as "a new form" that combined episode recaps with analyses of the show's subtexts and hidden meanings. Around 2005, in addition to his newspaper columns, Sepinwall began
blogging for
The Star-Ledger on the website "All TV".
HitFix and Uproxx After 14 years with
The Star-Ledger, Sepinwall left the newspaper in 2010 for a job at the entertainment journalism website HitFix, where he would review as many as 15 television shows each week. In 2010, Slate.com writer Josh Levin said Sepinwall "changed the nature of television criticism" and called him the "acknowledged king of the form" with regard to weekly episode recaps and reviews. He later wrote that, in hindsight, he regretted appearing on the show due to "the extreme blurring of the line [between reviewer and fan] it caused". During his appearance in a charity fundraiser on
The George Lucas Talk Show, Sepinwall agreed to review
The Star Wars Holiday Special, which he had never seen. The review, in which Sepinwall detailed what a complete disaster and bad idea the special was, was later published in
Rolling Stone. On September 15, 2025, Sepinwall was among several high-profile staffers laid off by
Rolling Stone. Interviews Sepinwall has interviewed such television figures as
The Wire creator
David Simon,
Mad Men creator
Matthew Weiner,
The O.C. creator
Josh Schwartz, and
Breaking Bad creator
Vince Gilligan. He also wrote a book about the
Fox teen drama series
The O.C. called
Stop Being a Hater and Learn to Love The O.C., which was published and released in 2004. In 2007, immediately after
The Sopranos ended, series creator
David Chase gave Sepinwall the sole interview he granted to any journalist at the end of the show. Sepinwall has been a particularly strong advocate for such shows as
Lost,
The Shield,
Breaking Bad, and
The Wire. ==Personal life ==