COMEDY. The gang from “It’s Always Sunny in Philadelphia” brings its absurd humor to high school in this animated comedy about two good-hearted but inept teen boys (voiced by Justin Long and “Sunny” star David Hornsby) with absent parents.
Series premiere, 10:30 p.m., FX
‘Project Runway All Stars’
REALITY. The designers meet a guest judge who may be one of their most difficult: Miss Piggy. Forget the diva attitude — what doesn’t clash with pink felt?
9 p.m., Lifetime
‘The Big Bang Theory’
COMEDY. Need proof that geeks are cool after all? This nerd-power sitcom hits 100 episodes, with rekindled romance in the air when Leonard invites Penny to dinner.
8 p.m., CBS
COMEDY. The never-ending family feud that is life in the Archer household heats up when Burt Reynolds — voicing the animated version of himself — gets caught in the middle of a seriously twisted love triangle.
Season premiere, 10 p.m., FX
COMEDY. How can Jack possibly disapprove of Liz’s new love interest? He’s played by James Marsden!
8 p.m., NBC