The first four seasons of Mad Men are already available via instant streaming to Netflix's customers in Canada under a separate agreement.
Lionsgate and Mad Men creator Matthew Weiner announced last week that Mad Men will return to AMC for seasons five and six, with the expectation that a seventh season will air as well.
Mad Men, which debuted in July 2007 to near-immediate acclaim, is a drama series that follows the lives of men and women working in the glamorous -- and frequently ruthless -- world of Madison Avenue advertising in the 1960s. The show has been awarded the Emmy Award for Outstanding Drama three times and the Golden Globe for Best Television Series in the Drama category three times.
In February, Netflix announced a two-year, non-exclusive licensing agreement with CBS to bring hit shows like Frasier, Medium and Cheers to Netflix's streaming service.