Intimate and powerful, the cable film “Warm Springs” (7 p.m. today, HBO) explores how Franklin Roosevelt’s experience with polio and paralysis changed his outlook and made him the man who would be elected four times to the presidency.

The film begins with a scene of a paralyzed Roosevelt (Kenneth Branagh) attempting to swim in icy Atlantic waters, and then settles into a series of flashbacks of his run for the vice presidency in 1920 and the infidelity that threatens his marriage to wife, Eleanor (Cynthia Nixon).

Branagh does a remarkable job capturing Roosevelt’s patrician manner and eccentric mannerisms, including the exaggerated tilt of the head that accompanied his haughty laughter.

Today’s other highlights

• Daniel Radcliffe stars in the 2001 adaptation of J.K. Rowling’s popular novel “Harry Potter and the Sorcerer’s Stone” (7 p.m., ABC).
• Scheduled on “48 Hours Mystery” (9 p.m., CBS): a journalist’s secrets may have cost him his life.
• A hot-button talk-show hosts blabs his last on “Law & Order” (9 p.m., NBC).

Sunday’s highlights

• A show house for the sightless on “Extreme Makeover: Home Edition” (7 p.m., ABC).
• Carlos heads off to the big house on “Desperate Housewives” (8 p.m., ABC).
• Alex beguiles a patient on “Grey’s Anatomy” (9 p.m., ABC).