Ellen's weekend TV picks
* MANHATTAN. 10:30 p.m. Sunday, PHL17.
Olivia Williams ("Dollhouse"), John Benjamin Hickey ("The Good Wife") and Alexia Fast play a family on the cusp of history in WGN America's newest drama. Set in Los Alamos, N.M., and focused on the scientists brought in there to design and build the atomic bomb - the Manhattan Project - it's as much a paranoid thriller as it is a history lesson. PHL17 is showing only the premiere. Some local cable systems carry WGN America, others (like Comcast in Philly) don't.
* POWER. 9 p.m. Saturday, Starz.
Starz has already ordered a second season of this drama starring Omari Hardwick ("Being Mary Jane") as gangster James "Ghost" St. Patrick, who's reaching for a different life than the one that's not ready to let him go. With two episodes left of the first eight-episode season, there's still time to catch up.
* LAST TANGO IN HALIFAX. 8 p.m. Sunday, WHYY12.
Who knew the marriage of two people in their 70s could get so complicated? In the next-to-last episode of Season 2, Celia (Anne Reid) is none too happy to be introducing Alan (Derek Jacobi) to her sister, and Alan's daughter Gillian (Nicola Walker) tells Anne's daughter (Sarah Lancashire) something she'll likely wish she hadn't.
* MASTERS OF SEX. 10 p.m. Sunday, Showtime.
Michael Apted ("56 Up") directed this terrific episode, in which Dr. William Masters (Michael Sheen) delivers a child - and some enlightened-for-the-era advice - to a set of confused parents.