The Big Bang Theory In this new episode, Adam Nimoy and Wil Wheaton (themselves) interview Sheldon (Jim Parsons) for a documentary about Adam's late father, Leonard Nimoy, but Sheldon has trouble keeping his mind off ex-girlfriend Amy (Mayim Bialik). Stephen Merchant also guest stars. 8 p.m. CBS
Heroes Reborn Hiro and Angela (guest stars Masi Oka and Cristine Rose) have a mission that could impact the entire course of civilization in this new episode that features a guest appearance by Greg Grunberg in his original "Heroes" role. 8 p.m. NBC
Bones A U.S. senator's bizarre murder leads...