Katey Sagal (<I>Sons of Anarchy</i>), Julian McMahon (<I>Nip/Tuck</i>) Katey Sagal (Sons of Anarchy), Julian McMahon (Nip/Tuck)

FX's fall schedule includes the return of three series and the arrival of one new comedy, the network announced Tuesday.

The lineup starts Sept. 8 with the return of Sons of Anarchy, which will now air on Tuesdays at 10 pm/ET.

The gritty motorcycle drama's first season topped the 18-34-year-old male demo for all of basic cable. Season 2's guest stars include Adam Arkin (playing a white supremacist) and Henry Rollins (as a deadly new threat to the SAMCRO motorcycle club).

Get Mega Buzz scoop on Sons of Anarchy's Mad Men spoof

Next up, It's Always Sunny in Philadelphia premieres its fifth season on Thursday, Sept. 17. FX plans to launch a new original comedy series this fall, to be paired with Philadelphia.

FX has also penciled in an October premiere for the sixth and penultimate season of Nip/Tuck.

Review TVGuide.com's complete roundup of Fall TV news

Guest-stars on tap for Nip/Tuck's coming cycle include Vanessa Redgrave, Rose McGowan, Mario Lopez, Barry Bostwick and Dancing with the Stars' Gilles Marini. Melanie Griffith (playing Kimber's mother) and Famke Janssen (reprising her role of transsexual Ava Moore) will be among the guests in the as-yet-unscheduled final season.

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