What To Watch: Mom's Ex-Girlfriend, Colony Meets A Hero And More

On TV this Thursday: Mom gets an unexpected blast from the past, the Legends bank on a fiscal takedown, Colony catches up with a former hero and Big Bang introduces Sheldon's G-ma. Here are 10 programs to keep on your radar:

Showtimes for February 4, 2016

ET

The Big Bang Theory

CBS

Sheldon's meemaw (June Squibb, Mom) disapproves of Amy; Raj meets a new woman at the comic book store. (Big Bang is hitting PaleyFest!)

DC's Legends of Tomorrow

The CW

Rip and Sara infiltrate Savage's bank in an attempt to weaken him fiscally; Jax joins Snart and Rory to "retrieve" a diamond. (Read Wentworth Miller Q&A.)

Madoff

ABC

Miniseries finale: Following the conclusion of the Bernie Madoff retelling, ABC News at 10 pm presents Madoff: After the Fall, featuring rare footage of the embezzler and new interviews with his wife and surviving children.

ET

Mom

CBS

Bonnie has an unexpected run-in with ex-girlfriend Jeanine (Rosie O'Donnell, The Fosters) after dragging Christy to a different AA meeting.

Project Runway Junior

Lifetime

Season finale (Part 2 of 2): The kiddie designers show off their collections at New York Fashion Week before a winner is chosen. (Not yet renewed.)

ET

Baskets

FX

Chip comes to Martha's aid after one of her best friends is murdered by another friend.

Colony

USA Network

The Bowmans are brought together by an attack on the home front; Adrian Pasdar (Heroes) and Kathryn Morris (Cold Case) guest-star.

Lip Sync Battle

Spike

Vampire Diaries' vet Nina Dobrev challenges NFL free agent Tim Tebow. (Watch a sneak peek.)

London Spy

BBC America

The police accuse Danny of murdering his lover during a vicious interrogation.

Shades of Blue

NBC

A local dealer uses Wozniak's secret as leverage to get back drugs once confiscated by Harlee and Tess; Harlee has doubts about Stahl's motives.

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