Happyland 11 p.m., MTV
The former music television network has made some great strides into original scripted programming in the last few years, including "Awkward," "Teen Wolf," and "Finding Carter." The pilot for this new series doesn't bode quite as well but could end up being fun as it explores the employee side of working in a theme park. That is, if the show quickly gets past the fact that two characters end up kissing before they realize they are brother and sister, because that's just creepy.
Makers: Women Who Make America 9 p.m, Channel 2
This episode from the second season of this series that examines women's contributions to industry and culture details their rise in the world of comedy. It features remarks from, among others, Carol Burnett, Ellen DeGeneres, Kathy Griffin, Sarah Silverman, Lily Tomlin, and the late Joan Rivers.
Finding Your Roots With Henry Louis Gates 8 p.m, Channel 2
They — Billie Jean King, Derek Jeter, and Rebecca Lobo — are the champions. Who were their ancestors?
iHeartRadio Music Festival 8 p.m., The CW
Sin City songfest part 2, with Lorde, Eric Church, One Direction, and more.
Forever 10 p.m., ABC
Looks like someone is adhering to Journey lyrics a little too faithfully.