Tom Brokaw: The First 50 Years. Two-hour Dateline NBC special marks Brokaw's 50th anniversary at the network and features his interviews with Oprah Winfrey, Tom Hanks, Bill Gates, and others. 9 p.m. Sunday, NBC.

Becoming Warren Buffett. Documentary chronicles the life of the billionaire investor, who, at 86, still drives himself to work each day from his Omaha, Neb., home and who's pledged to give away the bulk of his fortune. 10 p.m. Monday, HBO.

Superior Donuts. Judd Hirsch stars in a new comedy as the owner of a doughnut shop in Chicago whose employee (Jermaine Fowler) is trying to bring the operation into the 21st century. 8:30 p.m. Thursday preview before moving to 9 p.m. Monday on Feb. 6, CBS.

Powerless. New workplace comedy where the workplace is a company specializing in products to protect ordinary people from the damage caused by superheroes and supervillains - a growing problem, at least on TV. 8:30 p.m. Thursday, NBC.

Training Day. Sequel set 15 years after the film stars Bill Paxton as a veteran detective suspected of crooked dealings and Justin Cornwell as the partner working undercover to investigate him. 10 p.m. Thursday, CBS.