The Matrix and Descartes - brief, but with several eminent philosophers and clips from the movie.John Locke:
Three Minute Philosophy: Descartes - 56 seconds longer than advertised, contains some strong language, includes out-takes.
The Mark Steel Lectures (Parts 1, 2 and 3) - witty and includes biographical and historical background.
Philosophers Bernard Williams and Bryan Magee discuss Descartes (Parts 1, 2, 3, 4 and 5) - very low production values, but Williams is an eminent scholar.