Over 100 years ago, Albert Einstein grappled with the implications of his revolutionary special theory of relativity and came to a startling conclusion: mass and energy are one, related by the formula E = mc2. In "Einstein's Big Idea," NOVA dramatizes the remarkable story behind this equation. E = mc2 was just one of several extraordinary breakthroughs that Einstein made in 1905, including the completion of his special theory of relativity, his identification of proof that atoms exist, and his explanation of the nature of light, which would win him the Nobel Prize in Physics. Among Einstein's ideas, E = mc2 is by far the most famous. Yet how many people know what it really means? In a thought-provoking and engrossing docudrama, NOVA illuminates this deceptively simple formula by unraveling the story of how it came to be.

Peak Practice is a British drama series about a GP surgery in Cardale — a small fictional town in the Derbyshire Peak District — and the doctors who worked there. It ran on ITV from 10 May 1993 to 30 January 2002 and was one of their most successful series at the time. It originally starred Kevin Whately as Dr Jack Kerruish, Amanda Burton as Dr Beth Glover and Simon Shepherd as Dr Will Preston, though the roster of doctors would change many times over the course of the series. Cardale was based on the Staffordshire village of Longnor for the final series, but was previously based in the Derbyshire village of Crich, although certain scenes were filmed at other nearby Derbyshire towns and villages, most notably Matlock, Belper and Ashover.