The show is one of the supernatural-themed shows on the network, such as Buffy the Vampire Slayer, Angel, Charmed, Supernatural and Roswell, and has been noted many times for its mixing of multiple genres (from horror and fantasy to comedy and even soap).
On January 24, 2006, it was confirmed that the sixth season of Smallville will be part of the new CW Television Network's Fall 2006-2007 lineup once the WB and UPN cease operations in September 2006. A seventh, eighth, and ninth season were launched, with the ninth currently airing, and on March 4, 2010, the CW renewed the series for a tenth season to air during the network's 2010-2011 lineup.
Smallville broke the record for highest rated debut for The WB, with 8.40 million viewers tuning in for its pilot. On April 2011, Smallville surpassed Stargate SG-1 as the longest-running North American science fiction series on television.